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Chrome Molybdenum steel plate (often referred to in the industry as Chrome Moly) is used for a wide variety of applications particularly in the oil and gas industry, the nuclear industry and fossil fuel power stations.
The molybdenum provides increased strength and higher working temperatures whilst the chromium facilitates excellent corrosion resistance and oxidation.
With such high temperature tensile strength and anti-corrosive properties, our chrome molybdenum is also highly effective in salt water applications.
- major stockholding
- global shipping
- variety of plate widths
- extensive range of thicknesses
- quick turnaround
- accurate ‘in-house’ cutting and profiling service
- high quality steel from major European steel mills
For further information about our grades of chrome molybdenum steel plate please refer to the specifications below:
ASTM A387
ASTM A387 is the technical delivery standard covering the supply of chrome molybdenum pressure vessel alloy steel plates.
The introduction of chrome molybdenum increases the materials temperature tensile strength making it an excellent choice for elevated temperature environments. The material also displays excellent corrosion resistant characteristics. ASTM A387 is therefore ideal for the fabrication of weldable steel pressure vessels and industrial boilers found commonly in the petrochemical and oil industry.
ASTM A387 Grade 91 Class 2
High quality A387 Grade 91 Class 2 – manufactured at some of the world’s finest steel mills, this chrome–molybdenum alloy has excellent resistance to high working temperatures making it ideal for use in the oil, gas, chemical and power generation industry applications. We supply to fabricators who serve these industries on a global basis.
Our plates can be supplied from our own stockholding or directly from the mill – all plates come with mill test certification and individual stampings. Third party testing can be arranged at the customers request.
Chromium & Molybdenum content (according to the ASTM specification):
| DESIGNATION | NOMINAL CHROMIUM CONTENT (%) | NOMINAL MOLYBDENUM CONTENT (%) |
|---|---|---|
| A387 Grade 91 | 9.00% | 1.00% |
Tensile Requirements for Class 2 Plates
| DESIGNATION | REQUIREMENT | GRADE 91 |
|---|---|---|
| A387 Grade 91 | Tensile strength, ksi [MPA] | 85 to 110 [585 to 760] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 60 [415] | |
| Elongation in 8 in. [200mm], min % | ||
| Elongation in 2 in. [50mm], min, % | 18 | |
| Reduction of area, min % |
Chemical Requirements
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.08 – 0.12 0.06 – 0.15 |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.30 – 0.60 0.25 – 0.66 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.020 0.025 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.010 0.012 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
0.20 – 0.50 0.18 – 0.56 |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
8.00 – 9.50 7.90 – 9.60 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.85 – 1.05 0.80 – 1.10 |
| Nickel (Ni) | % |
| Heat Analysis: Product Analysis: |
0.40 0.43 |
| Vanadium (Vn) | % |
| Heat Analysis: Product Analysis: |
0.18 – 0.25 0.16 – 0.27 |
| Columbium (Nb) | % |
| Heat Analysis: Product Analysis: |
0.06 – 0.10 0.05 – 0.11 |
| Nitrogen (N) | % |
| Heat Analysis: Product Analysis: |
0.030 – 0.070 0.025 – 0.080 |
| Aluminium (Al) | % |
| Heat Analysis: Product Analysis: |
0.02 0.02 |
| Titanium (Ti) | % |
| Heat Analysis: Product Analysis: |
0.01 0.01 |
| Zirconium (Zr) | % |
| Heat Analysis: Product Analysis: |
0.01 0.01 |
ASTM A387 Grade 22 Class 2
A387 Grade 22 Class 2 is a grade of chromium-molybdenum alloy intended primarily for use fabricators in welded boilers and pressure vessels which are designed for use in raised temperature service.
With excellent heat resistance and anti corrosive/oxidation qualities, this steel grade is ideal for use in the chemical, oil and gas industry.
Equivalents
| BS | EN | ASTM/ASME | DIN |
|---|---|---|---|
| 622-515B | 10CrMo910 | A/SA387-22-2 | 10CrMo910 |
Chromium & Molybdenum content (according to the ASTM specification):
| DESIGNATION | NOMINAL CHROMIUM CONTENT (%) | NOMINAL MOLYBDENUM CONTENT (%) |
|---|---|---|
| A387 Grade 22 | 2.25% | 1.00% |
Tensile Requirements for Class 2 Plates
| DESIGNATION | REQUIREMENT | GRADE 22 |
|---|---|---|
| A387 Grade 22 | Tensile strength, ksi [MPA] | 75 to 100 [515 to 690] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 45 [310] | |
| Elongation in 8 in. [200mm], min % | ||
| Elongation in 2 in. [50mm], min, % | 18 | |
| Reduction of area, min % | 45 (measured on round specimen) 40 (measured on flat specimen) |
Chemical Requirements
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.05 – 0.15 0.04 – 0.15 |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.30 – 0.60 0.25 – 0.66 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.035 0.035 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.035 0.035 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
0.50 max 0.50 max |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
2.00 – 2.50 1.88 – 2.62 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.90 – 1.10 0.85 – 1.15 |
ASTM A387 Grade 12 Class 2
A387 Grade 12 Class 2 is a high quality chrome molybdenum steel which is ideal for elevated temperature service and offers excellent anti corrosion characteristics.
The steel has a wide range of uses including industrial boilers and pressure vessels, especially in environments where high temperature levels are common.
Equivalents
| BS | EN | ASTM/ASME | DIN |
|---|---|---|---|
| 620B | 13CrMo45 | A/SA387-12-2 | 13CrMo44 |
Chromium & Molybdenum content (according to the ASTM specification):
| DESIGNATION | NOMINAL CHROMIUM CONTENT (%) | NOMINAL MOLYBDENUM CONTENT (%) |
|---|---|---|
| A387 Grade 12 | 1.00% | 0.50% |
Tensile Requirements for Class 2 Plates
| DESIGNATION | REQUIREMENT | GRADE 12 |
|---|---|---|
| A387 Grade 12 | Tensile strength, ksi [MPA] | 65 to 85 [450 to 585] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 40 [275] | |
| Elongation in 8 in. [200mm], min % | 19 | |
| Elongation in 2 in. [50mm], min, % | 22 | |
| Reduction of area, min % |
Chemical Requirements:
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.05 – 0.17 0.04 – 0.17 |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.40 – 0.65 0.35 – 0.73 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.035 0.035 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.035 0.035 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
0.15 – 0.40 0.13 – 0.45 |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
0.80 – 1.15 0.74 – 1.21 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.45 – 0.60 0.40 – 0.65 |
ASTM A387 Grade 11 Class 2
As a quality chrome moly steel, A387 Grade 11 Class 2 is used in a variety of industries and is highly effective, particularly in the oil, gas and chemical industry, where liquids and gases are often stored at high temperature (see pressure vessels).
The higher levels of chromium also provide excellent corrosion and oxidation resistance.
Please refer to our technical specifications below for ASTM A387 Grade 11 Class 2.
Chromium & Molybdenum content (according to the ASTM specification):
| DESIGNATION | NOMINAL CHROMIUM CONTENT (%) | NOMINAL MOLYBDENUM CONTENT (%) |
|---|---|---|
| A387 Grade 11 | 1.25% | 0.50% |
Tensile Requirements for Class 2 Plates
| DESIGNATION | REQUIREMENT | GRADE 11 |
|---|---|---|
| A387 Grade 11 | Tensile strength, ksi [MPA] | 75 to 100 [515 to 690] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 43 [310] | |
| Elongation in 8 in. [200mm], min % | 18 | |
| Elongation in 2 in. [50mm], min, % | 22 | |
| Reduction of area, min % |
(Maximum values unless stated otherwise)
ASTM A387 Grade 9 Class 2
A387 Grade 9 Class 2 – chrome–molybdenum plate is an ideal material for welded pressure vessels and boilers used in elevated temperature service. With excellent resistance to high temperature and corrosion, this type of steel is commonly used in the petrochemical, oil, gas and power generation industry.
All plates come with mill test certification and individual stamping. Third party testing can be arranged at the customers request.
Chromium & Molybdenum content (according to the ASTM specification):
| DESIGNATION | NOMINAL CHROMIUM CONTENT (%) | NOMINAL MOLYBDENUM CONTENT (%) |
|---|---|---|
| A387 Grade 5 | 9.00% | 1.00% |
Tensile Requirements for Class 2 Plates:
| DESIGNATION | REQUIREMENT | GRADE 9 |
|---|---|---|
| A387 Grade 9 | Tensile strength, ksi [MPA] | 75 to 100 [515 to 690] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 45 [310] | |
| Elongation in 8 in. [200mm], min % | ||
| Elongation in 2 in. [50mm], min, % | 18 | |
| Reduction of area, min % | 45 (measured on round specimen) 40 (measured on flat specimen) |
Chemical Requirements:
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.15 max 0.15 max |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.30 – 0.60 0.25 – 0.66 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.030 0.030 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.030 0.030 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
1.00 max 1.05 max |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
8.00 – 10.00 7.90 – 10.10 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.90 – 1.10 0.85 – 1.15 |
| Vanadium (Vn) | % |
| Heat Analysis: Product Analysis: |
0.04 max 0.05 max |
ASTM A387 Grade 5 Class 2
A387 Grade 5 Class 2 – high quality chromium-molybdenum alloy steel plate, ideal for use in pressure vessels and industrial boilers due to it’s excellent heat resistant and anti corrosion properties.
We can supply plates from our own stockholding in Birmingham or directly from the mill and all plates come with mill test certification and individual stampings.
Chromium & Molybdenum content (according to the ASTM specification):
| DESIGNATION | NOMINAL CHROMIUM CONTENT (%) | NOMINAL MOLYBDENUM CONTENT (%) |
|---|---|---|
| A387 Grade 5 | 5.00% | 0.50% |
Tensile Requirements for Class 2 Plates:
| DESIGNATION | REQUIREMENT | GRADE 5 |
|---|---|---|
| A387 Grade 5 | Tensile strength, ksi [MPA] | 75 to 100 [515 to 690] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 45 [310] | |
| Elongation in 8 in. [200mm], min % | ||
| Elongation in 2 in. [50mm], min, % | 18 | |
| Reduction of area, min % | 45 (measured on round specimen) 40 (measured on flat specimen) |
Chemical Requirements:
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.15 max 0.15 max |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.30 – 0.60 0.25 – 0.66 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.035 0.035 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.030 0.030 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
0.50 max 0.55 max |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
4.00 – 6.00 3.90 – 6.10 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.45 – 0.65 0.40 – 0.70 |
ASME SA387
The ASME SA387 standard covers the supply of weldable chrome molybdenum alloy steel plates for pressure vessels used in elevated temperature service.
The added molybdenum and chromium provides excellent corrosion resistance and high temperature resistance respectively.
ASME SA387 standard plates are used by the world’s leading fabricators who in turn, supply primarily to the oil and petrochemical industry. Applications for ASME SA387 include pressurised vessels, industrial boilers, heat exchangers and pipework.
SA387 Grade 91 Class 2
Where resistance to high temperature and good anti-corrosion characteristics are required, ASME SA387 Grade 91 Class 2 carbon alloy steel plate is a material to consider. It is a pressure vessel grade steel which is used commonly by fabricators who supply the oil and gas industry.
Due to the materials excellent corrosion resistant properties, SA387 Grade 91 is also an option for use in sour service environments. The material has good weldability and with its heat resistant qualities, the material is a highly versatile steel which can be used in numerous applications.
Chromium & Molybdenum content (according to the ASME specification):
| DESIGNATION | NOMINAL CHROMIUM CONTENT (%) | NOMINAL MOLYBDENUM CONTENT (%) |
|---|---|---|
| A387 Grade 91 | 9.00% | 1.00% |
Tensile Requirements for Class 2 Plates
| DESIGNATION | REQUIREMENT | GRADE 91 |
|---|---|---|
| A387 Grade 91 | Tensile strength, ksi [MPA] | 85 to 110 [585 to 760] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 60 [415] | |
| Elongation in 8 in. [200mm], min % | ||
| Elongation in 2 in. [50mm], min, % | 18 | |
| Reduction of area, min % |
Chemical Composition of ASME SA387 Grade 91 Class 2
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.08 – 0.12 0.06 – 0.15 |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.30 – 0.60 0.25 – 0.66 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.020 0.025 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.010 0.012 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
0.20 – 0.50 0.18 – 0.56 |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
8.00 – 9.50 7.90 – 9.60 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.85 – 1.05 0.80 – 1.10 |
| Nickel (Ni) | % |
| Heat Analysis: Product Analysis: |
0.40 0.43 |
| Vanadium (Vn) | % |
| Heat Analysis: Product Analysis: |
0.18 – 0.25 0.16 – 0.27 |
| Columbium (Nb) | % |
| Heat Analysis: Product Analysis: |
0.06 – 0.10 0.05 – 0.11 |
| Nitrogen (N) | % |
| Heat Analysis: Product Analysis: |
0.030 – 0.070 0.025 – 0.080 |
| Aluminium (Al) | % |
| Heat Analysis: Product Analysis: |
0.02 0.02 |
| Titanium (Ti) | % |
| Heat Analysis: Product Analysis: |
0.01 0.01 |
| Zirconium (Zr) | % |
| Heat Analysis: Product Analysis: |
0.01 0.01 |
ASME SA387 Grade 22 Class 2
We supply ASME SA387 Grade 22 Class 2 plates to global fabricators serving the oil, gas and petrochemical industry.
These industries require a pressure vessel grade steel which works well in elevated temperatures and our material serves this purpose well. And with good corrosion and oxidation resistance, SA387 Grade 22 Class 2 plates are a good option for sour gas environments too.
Equivalents
| BS | EN | ASTM/ASME | DIN |
|---|---|---|---|
| 622-515B | 10CrMo910 | A/SA387-22-2 | 10CrMo910 |
Chromium & Molybdenum content (according to the ASME specification):
| DESIGNATION | NOMINAL CHROMIUM CONTENT (%) | NOMINAL MOLYBDENUM CONTENT (%) |
|---|---|---|
| A387 Grade 22 | 2.25% | 1.00% |
Tensile Requirements of Class 2 Plates
| DESIGNATION | REQUIREMENT | GRADE 22 |
|---|---|---|
| A387 Grade 22 | Tensile strength, ksi [MPA] | 75 to 100 [515 to 690] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 45 [310] | |
| Elongation in 8 in. [200mm], min % | ||
| Elongation in 2 in. [50mm], min, % | 18 | |
| Reduction of area, min % | 45 (measured on round specimen) 40 (measured on flat specimen) |
Chemical Composition of ASME S387 Grade 22 Class 2
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.15 max 0.15 max |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.30 – 0.60 0.25 – 0.66 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.030 0.030 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.030 0.030 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
1.00 max 1.05 max |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
8.00 – 10.00 7.90 – 10.10 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.90 – 1.10 0.85 – 1.15 |
| Vanadium (Vn) | % |
| Heat Analysis: Product Analysis: |
0.04 max 0.05 max |
ASME SA387 Grade 12 Class 2
Engineered for use in elevated temperature service, ASME SA387 Grade 12 is a chrome molybdenum carbon alloy steel for use in weldable pressure vessels and industrial boilers.
The material benefits from added chromium which provides excellent corrosion and oxidation resistance making it ideal for sour service applications in the oil and gas industry.
Equivalents
| DESIGNATION | NOMINAL CHROMIUM CONTENT (%) | NOMINAL MOLYBDENUM CONTENT (%) |
|---|---|---|
| A387 Grade 5 | 5.00% | 0.50% |
Chromium & Molybdenum content (according to the ASME specification):
| DESIGNATION | REQUIREMENT | GRADE 5 |
|---|---|---|
| A387 Grade 5 | Tensile strength, ksi [MPA] | 75 to 100 [515 to 690] |
| Yield strength, min, ksi [MPa]/(0.2% offset) | 45 [310] | |
| Elongation in 8 in. [200mm], min % | ||
| Elongation in 2 in. [50mm], min, % | 18 | |
| Reduction of area, min % | 45 (measured on round specimen) 40 (measured on flat specimen) |
Tensile Requirements for Class 2 Plates
| DESIGNATION | NOMINAL CHROMIUM CONTENT (%) | NOMINAL MOLYBDENUM CONTENT (%) |
|---|---|---|
| A387 Grade 5 | 5.00% | 0.50% |
Chemical Composition of ASME SA387 Grade 12 Class 2
| Carbon (C) | % |
| Heat Analysis: Product Analysis: |
0.15 max 0.15 max |
| Manganese (Mn) | % |
| Heat Analysis: Product Analysis: |
0.30 – 0.60 0.25 – 0.66 |
| Phosphorus (P) | % |
| Heat Analysis: Product Analysis: |
0.035 0.035 |
| Sulphur (S) (Max) | % |
| Heat Analysis: Product Analysis: |
0.030 0.030 |
| Silicon (Si) | % |
| Heat Analysis: Product Analysis: |
0.50 max 0.55 max |
| Chromium (Cr) | % |
| Heat Analysis: Product Analysis: |
4.00 – 6.00 3.90 – 6.10 |
| Molybdenum (Mo) | % |
| Heat Analysis: Product Analysis: |
0.45 – 0.65 0.40 – 0.70 |
EN 10028
EN10028: Part2 :2006 is a euro norm standard relating to weldable pressure vessel grade alloy and non–alloy steels used in elevated temperature service.
The standard supersedes the old British and DIN standards. Chrome Molybdenum steels, with their higher temperature resistance, come under this standard and this section includes link to EN10028 chrome moly grades which are suitable for the fabrication of pressure vessels and boilers.
Chrome Molybdenum pressure vessel grade steels offers good corrosion resistance and weldability. We supply this material to fabricators who serve the major oil, petrochemical and gas companies.
EN 10028 10CrMo910
10CrMo910, with increased molybdenum and chromium, provides greater heat and corrosion resistance than 16Mo3 & 13CrMo45.
Again the material is a pressure vessel grade steel for use in elevated temperature service. Sunny Steel supplies 10CrMo910 to fabricators serving the oil and gas industry. The steel has good weldability and is offered under the EN 10028 standard.
Please refer to the technical information for 10CrMo910 below.
Mechanical Properties of 10CrMo910
| GRADE | THICKNESS | YIELD STRENGTH | TENSILE STRENGTH | ELONGATION (A) | IMPACT ENERGY KV AT TEST TEMPERATURE | ||
|---|---|---|---|---|---|---|---|
| (mm) | 50 | 100 | 150 | -20 | 0 | +20 | |
| MPa | MPa | % | J | J | J | ||
| 16Mo3 | < 16 | 310 | 480/630 | 18 | – | – | 31 |
| > 16 < 40 | 300 | 480/630 | 18 | – | – | 31 | |
| > 40 < 60 | 290 | 480/630 | 18 | 27 | |||
| > 60 < 100 | 280 | 470/620 | 17 | 27 | |||
| > 100 < 150 | 265 | 460/610 | 17 | 27 | |||
| > 150 < 250 | 250 | 450/600 | 17 | 27 |
Chemical Composition of 10CrMo910
| Element | % |
|---|---|
| Carbon (C) | 0.08/0.14 |
| Silicon (Si) | 0.50 |
| Manganese (Mn) | 0.40/0.80 |
| Phosphorus (P) | 0.020 |
| Sulphur (S) | 0.010 |
| Chromium (Cr) | 2.00/2.50 |
| Molybdenum (Mo) | 0.90/1.10 |
| Nitrogen (N) | 0.012 |
| Copper (Cu) | 0.30 |
EN 10028 13CrMo45
13CrMo45 is chrome moly steel intended for use in the fabrication of weldable steel pressure vessels and boilers in elevated temperature service.
The material offers excellent performance with higher than normal temperature resistance and displays excellent anti-corrosive properties making it suitable steel for use in sour service environments. Popular with the oil, petrochemical and gas industries, 13CrMo45 is supplied under the EN 10028 euro norm standard.
Technical information for 13CrMo45 can be found below.
Mechanical Properties of 13CrMo45
| GRADE | THICKNESS | YIELD STRENGTH | TENSILE STRENGTH | ELONGATION (A) | IMPACT ENERGY KV AT TEST TEMPERATURE | ||
|---|---|---|---|---|---|---|---|
| (mm) | 50 | 100 | 150 | -20 | 0 | +20 | |
| MPa | MPa | % | J | J | J | ||
| 16Mo3 | < 16 | 300 | 450/600 | 19 | – | – | 31 |
| > 16 < 60 | 290 | 450/600 | 19 | – | – | 31 | |
| > 60 < 100 | 270 | 440/590 | 27 | ||||
| > 100 < 150 | 255 | 430/580 | 27 | ||||
| > 150 < 250 | 245 | 420/570 | 27 |
Chemical Composition of 13CrMo45
| Element | % |
|---|---|
| Carbon (C) | 0.08/0.18 |
| Silicon (Si) | 0.35 |
| Manganese (Mn) | 0.40/1.00 |
| Phosphorus (P) | 0.025 |
| Sulphur (S) | 0.010 |
| Chromium (Cr) | 0.70/1.15 |
| Molybdenum (Mo) | 0.40/0.60 |
| Nitrogen (N) | 0.012 |
| Copper (Cu) | 0.30 |
EN 10028 16Mo3
16Mo3 is a EN10028 specified pressure vessel grade chrome molybdenum steel alloy for use in elevated working temperatures.
The material is used as a weldable steel in the fabrication of industrial boilers and steel pressurised vessels found in the oil, gas and chemical industry. Due to the materials chrome and molybdenum content, 16Mo3 has excellent heat resistance and corrosion resistant characteristics.
Mechanical Properties of 16Mo3
| GRADE | THICKNESS | TEMPERATURE (DEG C) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| (mm) | 50 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | |
| MPa | MPa | MPa | MPa | MPa | MPa | MPa | MPa | MPa | MPa | ||
| 16Mo3 | < 16 | 273 | 264 | 250 | 233 | 213 | 194 | 175 | 159 | 147 | 141 |
| > 16 < 40 | 268 | 259 | 245 | 228 | 209 | 190 | 172 | 156 | 145 | 139 | |
| > 40 < 60 | 258 | 250 | 236 | 220 | 202 | 183 | 165 | 150 | 139 | 134 | |
| > 60 < 100 | 238 | 230 | 218 | 203 | 186 | 169 | 153 | 139 | 129 | 123 | |
| > 100 < 150 | 218 | 211 | 200 | 186 | 171 | 155 | 140 | 127 | 118 | 113 | |
| > 150 < 250 | 208 | 202 | 191 | 178 | 163 | 148 | 134 | 121 | 113 | 108 |
Chemical Composition of 16Mo3
| Element | % |
|---|---|
| Carbon (C) | 0.12/0.20 |
| Silicon (Si) | 0.35 |
| Manganese (Mn) | 0.40/0.90 |
| Phosphorus (P) | 0.025 |
| Sulphur (S) | 0.010 |
| Chromium (Cr) | 0.030 |
| Molybdenum (Mo) | 0.25/0.35 |
| Nickel (Ni) | 0.30 |
| Nitrogen (N) | 0.012 |
| Copper (Cu) | 0.30 |
BS 1501 2
BS1501: Part 2: 1988 is the old British Standard specification for alloy steels used for pressure purposes.
The standard has now been replaced with EN10028: Part2 :2006 but we have included information about the standard and relevant steels for cross reference purposes. This is because many of our clients still refer to the older steel specifications.
Part of this standard includes steels with increased chromium and molybdenum which promotes higher corrosion and heat resistance. These steels, which are used in the fabrication of pressurised vessels and boilers, have been supplied to the oil and gas industry for many years.
BS 1501 622B
Although no longer a currently specified steel grade, 622B is still referred to by our customers and as a consequence we have included information here for cross referencing purposes.
622B is a chrome moly pressure vessel grade steel for use in elevated temperature service. The BS standard has now been superseded with the euro norm standard EN10028. The material benefits from greater tensile and yield strength and has good weldability characteristics. The steel is used commonly in the fabrication of industrial boilers and pressurised tanks found throughout the oil gas and petrochemical industry.
Please refer to the technical information for Grade 622B steel below.
Mechanical Properties of BS 1501 622B
| GRADE | THICKNESS (MM) | TENSILE STRENTH | YIELD STRENGTH | ELONGATION (A) |
|---|---|---|---|---|
| 620B | <100 | 515/690 | 310 | 16 |
| >100 <150 | 500/670 | 285 | 16 |
Chemical Composition of BS 1501 622B
| Element | % |
|---|---|
| Carbon (C) | 0.09/0.15 |
| Silicon (Si) | 0.50 |
| Manganese (Mn) | 0.30/0.60 |
| Phosphorus (P) | 0.025 |
| Sulphur (S) | 0.015 |
| Chromium (Cr) | 2.00/2.50 |
| Molybdenum (Mo) | 0.90/1.10 |
| Nickel (Ni) | 0.30 |
| Others | 0.32 |
BS 1501 621B
Grade 621B has long been superseded by EN10028 but as our clients still make reference to this chrome moly grade, we have included details here, which should be used for cross reference purposes.
621B is a chrome moly steel for use in pressurised vessels and boilers found commonly in the oil and gas industry. The material has good tensile and yield strength and is designed to operate in higher working temperatures. 621B has good weldability and corrosion resistance.
Please refer to the technical information below for this particular steel grade.
Mechanical Properties of 621B
| GRADE | THICKNESS (MM) | TENSILE STRENTH | YIELD STRENGTH | ELONGATION (A) |
|---|---|---|---|---|
| 620B | <75 | 515/690 | 340 | 18 |
| >75 <100 | 500/670 | 320 | 16 | |
| >100 <150 | 490/650 | 310 | 16 |
Chemical Composition of 621B
| Element | % |
|---|---|
| Carbon (C) | 0.09/0.17 |
| Silicon (Si) | 0.50/0.80 |
| Manganese (Mn) | 0.40/0.65 |
| Phosphorus (P) | 0.025 |
| Sulphur (S) | 0.015 |
| Chromium (Cr) | 1.00/1.50 |
| Molybdenum (Mo) | 0.45/0.60 |
| Nickel (Ni) | 0.30 |
| Others | 0.32 |
BS 1501 620B
Grade 620B is an older British Standard for pressure vessel grade chrome moly steel which has now been superseded by EN10028.
Although now out of date, many of our customers still refer to 620B so we have included details on our website – please note that this information is solely for cross references purposes and you should consider material to current standards.
Like all our chrome molybdenum steel plates, the material specification has increased molybdenum which makes the steel effective in elevated temperature service coupled with excellent corrosion resistance due to the level of chromium content.
Mechanical Properties of BS 1501 620B
| GRADE | THICKNESS (MM) | TENSILE STRENTH | YIELD STRENGTH | ELONGATION (A) |
|---|---|---|---|---|
| 620B | <75 | 480/600 | 340 | 18 |
| <75 <100 | 450/570 | 280 | 16 | |
| >100 <150 | 430/550 | 255 | 16 |
Chemical Composition of BS 1501 620B
| Element | % |
|---|---|
| Carbon (C) | 0.09/0.18 |
| Silicon (Si) | 0.15/0.40 |
| Manganese (Mn) | 0.40/0.65 |
| Phosphorus (P) | 0.025 |
| Sulphur (S) | 0.015 |
| Chromium (Cr) | 0.80/1.15 |
| Molybdenum (Mo) | 0.45/0.60 |
| Nickel (Ni) | 0.30 |
| Others | 0.32 |
