LTCS ASTM A333 Pipe

ASTM A333 Grade 6 specification cover seamless and welded carbon and alloy steel pipe which used in low temperature working condition. Also gas compression pipeline which are cryogenic equipment manufacturing, cold storage, and pipes for conveying ultra-low temperature liquefied gas.

Please send your inquiry by sales@sunnysteel.com

Category: Alloy steel pipe Tags: ASTM A333, ASTM A333 Gr.6

Description

ASTM A333 Grade 6 Seamless Pipe involved is similar to AISI 4032 low alloy steel. The ASTM A333 Grade 6 low alloy steel seamless pipes are intended for low temperature services with minimum design temperature -45°C [-50°F] requiring notch toughness. They are usually furnished in nominal pipe size (NPS) and nominal wall thickness with schedule numbers in accordance with ASME B36.10M. They are often connected with flanges of ASTM A350 LF2 and butt-weld pipe fittings of ASTM A420 WPL6. Seamless pipes made from ASTM A333 Gr.6 are primarily used for the construction of pipelines in the production of ethylene, propylene, urea, ammonia, and N-P-K compound fertilizer. They may be involved in the scrubber, purification, desulfurization and degreasing processes in oil & gas, petrochemical, coal and pharmaceutical industries. They can also be used for the fabrication of cryogenic equipment as well as refrigeration houses.

ASTM A333 Grade 6 is the part of standard covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. ASTM A333 Grade 6 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.

Seamless and Welded Steel Pipe size for Low-Temperature Service:

Outer Dimensions: 19.05mm – 114.3mm
Wall Thickness: 2.0mm – 14 mm
Length: max 16000mm

Raw material

Size inspection

Seamless pipes with compound bevels as per ASME B16-25 And ASTM A333

Application: Seamless and Welded Steel Pipe for Low-Temperature Service.

Steel grade: ASTM A333 Grade 6

Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A333 Grade 6 Chemical Compositions(%)

Compositions	Data
Carbon(max.)	0.30
Manganese	0.29-1.06
Phosphorus(max.)	0.025
Sulfur(max.)	0.025
Silicon	…
Nickel	…
Chromium	…
Other Elements	…

Mechanical properties for ASTM A333 Grade 6 Alloy Steel

Properties	Data
Tensile strength, min, (MPa)	415 Mpa
Yield strength, min, (MPa)	240 Mpa
Elongation, min, (%), L/T	30/16.5

Impact requirements:

the notched-bar impact properties of each set of three impact specimens, when tested at temperature specified shall be not less than the values prescribed.

Referenced Documents

ASTM A 370 Test Methods and Definitions for Mechanical testing of Steel Products
ASTM A999/A 999M Specification for General requirements for Alloy and Stainless Steel Pipe.
ASTM A 671 Specification for General requirements for Alloy and Stainless Steel Pipe
ASTM E 23 Test Methods for Notched bar Impact testing of Metallic Materials

Scope

ASTM A333 covers nominal (average) wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. Several grades of ferritic steel are included. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.

A333 pipe is furnished to nine different grades designated by numbers 1, 3, 4, 6, 7, 8, 9, 10, & 11.

Chemical composition (%) of ASTM a333 steel pipe

Grade	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V	Al
ASTM A333 Grade 1	≤0.30		0.40-1.06	≤0.025	≤0.025
ASTM A333 Grade 3	≤0.19	0.18-0.37	0.31-0.64	≤0.025	≤0.025		3.18-3.82
ASTM A333 Grade 4	≤0.12	0.18-0.37	0.50-1.05	≤0.025	≤0.025	0.44-1.01	0.47-0.98	0.40-0.75			0.04-0.30
ASTM A333 Grade 6	≤0.30	≥0.10	0.29-1.06	≤0.025	≤0.025
ASTM A333 Grade 7	≤0.19	0.13-0.32	≤0.90	≤0.025	≤0.025		2.03-2.57
ASTM A333 Gr. 8	≤0.13	0.13-0.32	≤0.90	≤0.025	≤0.025		8.40-9.60
ASTM A333 Grade 9	≤0.20		0.40-1.06	≤0.025	≤0.025		1.60-2.24	0.75-1.25
ASTM A333 Grade 10	≤0.20	0.10-0.35	1.15-1.50	≤0.03	≤0.015	≤0.15	≤0.25	≤0.015	≤0.50	≤0.12	≤0.06
ASTM A333 Grade 11	≤0.10	≤0.35	≤0.6	≤0.025	≤0.025	≤0.50	35.0-37.0		≤0.50

Mechanical requiremnts of ASTM A333 alloy pipe

Grade	Tensile Strength	Yield Point	Elongation (%)
	(MPa）	(MPa)	Y	X
ASTM A333 Grade 1	≥380	≥205	≥35	≥25
ASTM A333 Grade 3	≥450	≥240	≥30	≥20
ASTM A333 Grade 4	≥415	≥240	≥30	≥16.5
ASTM A333 Grade 6	≥415	≥240	≥30	≥16.5
ASTM A333 Grade 7	≥450	≥240	≥30	≥22
ASTM A333 Gr. 8	≥690	≥515	≥22
ASTM A333 Grade 9	≥435	≥315	≥28
ASTM A333 Grade 10	≥550	≥450	≥22
ASTM A333 Grade 11	≥450	≥240	≥18

Production specification range of low temperature pipe products

No.	Order No.	Size description
No.	Order No.	O.D./mm	W.T./mm	Legnth/m
1	A333 Gr.6 A333 Gr.6/X42NS	10～127	1～20	6～12.0
		42～114.3	3.5～6	6～12.2
		42～114.3	6～12	6～12.2
		114.3～180	3.8～8	6～12.2
		114.3～180	8～22	6～12.2
		68～180	10～14	6～12.2
		69～254	14～55	6～12.2
		140～340	6～8	6～12.2
		140～368	8～42	6～12.2
		318～720	14～50	4～12.5
2	A333 Gr.6/X52QS	42～114.3	3.5～12	6～12.2
		114.3～180	3.8～22	6～12.2
		68～254	10～40	6～12.2
		140～368	6～40	6～12.2
		318～720	14～40	4～12.5
		140～368	6～25	6～12.2
		318～720	14～25	4～12.5
3	16MnDG	10～127	1～20	6～12.0
		42～114.3	3.5～12	6～12.2
		114.3～180	3.8～22	6～12.2
		68～254	10～55	6～12.2
		140～368	6～42	6～12.2
		318～720	14～120	4～12.5

Strike temperature condition

Crade	The lowest temperature for strike test
	℉	℃
ASTM A333 Grade 1	-50	-45
ASTM A333 Grade 3	-150	-100
ASTM A333 Grade 4	-150	-100
ASTM A333 Grade 6	-50	-45
ASTM A333 Grade 7	-100	-75
ASTM A333 Grade 8	-320	-195
ASTM A333 Grade 9	-100	-75
ASTM A333 Grade 10	-75	-60

Sunny Steel Supply supplies a full range of ASTM A333 (ASME S/A 333)

Low Temperature Steel Pipe Specifications & Grades

SA333 & A333 – Grades 1, 3, 6 & 8
A671 CC65 CL22 EFW at -50°F (Welded Alternative to A333)
Flanges: A/SA 350 LF2, LF3
Fittings: A/SA-420 WPL6, WPL3

Acceptable for ASME Codes

ASME Codes	ASTM A333 Gr.6
B31.1	Yes
B31.3	Yes
B31.4	Yes
B31.5	Yes
31.8	Yes
Section I	Yes
Section III	Yes
Section VIII-1	Yes
Section XII	Yes
Section VIII-2	Yes

*The UNS number of ASTM A333 Gr.6 is K03006, with the P-number of 1.

Process

Cold drawn seamless steel tube deformed process

Cold Drawn Seamless Mechanical Tubing (CDS) is a cold drawn 1018/1026 steel tube which offers uniform tolerances, enhanced machinability and increased strength and tolerances compared to hot-rolled products.

Cold drawn seamless steel tubes process

Cold drawn steel tube is with hot-rolled steel coil as raw material, and tandem cold rolling pickled to remove oxide scale, its finished rolling hard roll, rolling hard volumes due to the continuous cold deformation caused by cold hardening strength, hardness increased indicators declined tough plastic, stamping performance will deteriorate, which can only be used for simple deformation of the parts.

Rolling hard roll can be used as the raw material of the hot-dip galvanizing plant, hot dip galvanizing line set annealing line. Rolling hard roll weight is generally 6 to 13.5 tons, the coil diameter of 610mm.

Hot rolled seamless steel pipe deformed process

Hot-rolled seamless steel pipe production base deformation process can be summarized as three stages: perforation, extension and finishing.

Hot rolled seamless steel pipe deformed process

The main purpose of the perforation process is to become a solid round billet piercing hollow shell. Capillary in the specifications, accuracy and surface quality can not meet the requirements of the finished product, further improvements are needed to deform the metal through. The main purpose of the stretching machine is further reduced sectional view (main compression wall) for a larger axial extension, so that the capillary improved dimensional accuracy, surface quality and organizational performance.

After stretching machine rolled steel pipe shortage collectively need further molding mill in order to achieve the requirements of the finished pipe. Rolled steel due to pass in the method widely used in the production of seamless steel tubes.

So far, due to the method pass rolling steel can be divided into two categories: core pension without rolling rolling (hollow body rolling), and with the mandrel. Sizing machines, reducing mill and stretch reducing mill belonging to the hole without mandrel type continuous rolling mills are generally coffin. Its main purpose is to reduce the diameter of the deformation process or sizing get finished steel, the wall thickness of process control, can make thinning, thickening or nearly unchanged.

All the traditional hole-type rolling machine with mandrel belong to extend machine. The main purpose is to reduce the deformation process perforated capillary wall thickness and outer diameter roll passes in the deformation zone and the mandrel posed, for a larger axial extension. At the same time a certain improvement in the organization, performance, accuracy, surface quality.

Cut to Length

Before cutting pipe and tubing

No matter the material, measure the diameter of the pipe or tube to be cut to ensure that you use the right-size tube cutter for the job. When determining how to make a straight cut, use a tape measure and a pencil or other writing instrument to mark on the surface where you want to cut. If possible, mark around the circumference of a pipe, especially when cutting with a handsaw. Ensure that a cut is as straight as possible by securing the pipe with a vise, clamp, miter box or even duct tape to keep the length from shifting out of place while cutting.

After cutting pipe and tubing

Unless a cut is perfectly clean, you should expect to remove burrs from around the edge, especially after sawing.
Use a deburring tool to clean the edge after tube cutting.
You may opt to use a metal file on the cut of a metal pipe.

Application

Alloy steel pipes are ideally suitable for chemical, petrochemicals, and other energy-related applications.

The alloy steel pipe adopts high quality carbon steel, alloy structural steel and stainless & heat resisting steel as raw material through hot rolling or cold drawn to be made.

Alloy steel can be used in process area where carbon steel has limitation such as

High-temperature services such as heater tubes
Low-temperature services such as cryogenic application
Very high presser service such as steam header

As an important element of steel products, alloy steel pipe can be divided into seamless steel pipe and welded steel pipe according to the manufacturing technique and tube billet shape.

Here you can see the common alloy steel grade that you will come across.

For Pipes: ASTM A335 Gr P1, P5, P11, P9
For Wrought Fittings: ASTM A234 Gr.WP5, WP9, WP11
For Forged Fittings: ASTM A182 F5, F9, F11 etc.

Why the application of alloy steel pipe is wider than others

There are many kinds of materials used for transport in industrial production. Specifically we will have more choices and it is not limited to the use of alloy steel pipe. But even in the face of more choices, many people tend to choose alloy steel pipe. People make their own choices will have their own reasons. This means the alloy steel pipe application has its own advantages. Compared with transmission lines made of other materials, after it meets the basic application requirements, its quantity is lighter. Then in the practical application of alloy steel pipe, it will have more advantages because of this. Besides its physical characteristic advantage, it also has economic advantages. The wide application of alloy steel pipe is with kinds of reasons. So in practical usage, we can exploit the advantages to the full, in this way can we get more profits in these applications of alloy steel pipe.

What requirements should alloy steel pipe application meet

The transportation of kinds of gases or liquids in production needs to rely on alloy steel pipe. This shows that the actual role of alloy steel pipe application is important. High temperature resistant and low temperature resistant is the tolerance of temperature. In the practical application of alloy steel pipe, there will be many materials need to be transported. However their temperatures are not the same. So this can be the basic requirement to alloy steel pipe. It needs more corrosion resistance. Corrosion resistant material is the best material during transporting, because it is corrosion resistant. So it can be used in more occasions. And it is definitely very convenient for users.

The biggest advantages of alloy steel pipe

Can be 100% recycled, environmentally friendly, energy-saving, resource conservation, national strategy, national policy to encourage the expansion of the field of application of high-pressure alloy pipe. Of alloy steel pipe total consumption accounted steel in the proportion is only half of the developed countries, to expand the field of use of the alloy steel pipe to provide a wider space for the development of the industry. The future needs of the average annual growth of China’s high-pressure alloy steel pipe long products up to 10-12%.

Specification, standard and identification of alloy steel pipes

Alloy Steel pipe contains substantial quantities of elements other than carbon such as nickel, chromium, silicon, manganese, tungsten, molybdenum, vanadium and limited amounts of other commonly accepted elements such as manganese, sulfur, silicon, and phosphorous.

Industries We Serve

Our team of experienced sales specialists proudly partners with gas and chemical processors, power generation plants, oil refineries, and related industries to offer piping components and value-added services.

The biggest advantages of alloy steel pipe can be 100% recycled, environmentally friendly, energy-saving, resource conservation, national strategy, national policy to encourage the expansion of the field of application of high-pressure alloy pipe. Of alloy tube total consumption accounted steel in the proportion is only half of the developed countries, to expand the field of use of the alloy tube to provide a wider space for the development of the industry. According to the Chinese Special Steel Association alloy pipe Branch Expert Group, the future needs of the average annual growth of China’s high-pressure alloy pipe long products up to 10-12%.

Q&A

Alloying Elements

Alloying Elements	Effect on the Properties
Chromium	Increases Resistance to corrosion and oxidation. Increases hardenability and wear resistance. Increases high temperature strength.
Nickel	Increases hardenability. Improves toughness. Increases impact strength at low temperatures.
Molybdenum	Increases hardenability, high temperature hardness, and wear resistance. Enhances the effects of other alloying elements. Eliminate temper brittleness in steels. Increases high temperature strength.
Manganese	Increases hardenability. Combines with sulfur to reduce its adverse effects.
Vanadium	Increases hardenability, high temperature hardness, and wear resistance. Improves fatigue resistance.
Titanium	Strongest carbide former. Added to stainless steel to prevent precipitation of chromium carbide.
Silicon	Removes oxygen in steel making. Improves toughness. Increases hardness ability
Boron	Increases hardenability. Produces fine grain size.
Aluminum	Forms nitride in nitriding steels. Produces fine grain size in casting. Removes oxygen in steel melting.
Cobalt	Increases heat and wear resistance.
Tungsten	Increases hardness at elevated temperatures. Refines grain size.

Commonly used alloying elements and their effects are listed in the table given below.

The most important and desired changes in alloy steel are

Alloy steels are made by combining carbon steel with one or several alloying elements, such as manganese, silicon, nickel, titanium, copper, chromium and aluminum. These metals are added to produce specific properties that are not found in regular carbon steel. The elements are added in varying proportions (or combinations) making the material take on different aspects such as increased hardness, increased corrosion resistance, increased strength, improved formability (ductility); the weldability can also change.

Increased hardenability.
Increased corrosion resistance.
Retention of hardness and strength.
Nearly all alloy steels require heat treatment in order to bring out their best properties.

Alloying Elements & Their Effects

Chromium – Adds hardness. Increased toughness and wear resistance.
Cobalt – Used in making cutting tools; improved Hot Hardness (or Red Hardness).
Manganese – Increases surface hardness. Improves resistance to strain, hammering & shocks.
Molybdenum – Increases strength. Improves resistance to shock and heat.
Nickel – Increases strength & toughness. Improves corrosion resistance.
Tungsten – Adds hardness and improves grain structure. Provides improved heat resistance.
Vanadium – Increases strength, toughness and shock resistance. Improved corrosion resistance.
Chromium-Vanadium – Greatly improved tensile strength. It is hard but easy to bend and cut.

Pipes, Tubes and Hollow Sections

Norms:

API 5L – Line Pipe
ASTM A 53 – Black and Hot-Dipped, Zinc-Coated, Welded and Seamless, Steel Pipe
ASTM A 106 – Seamless Carbon Steel Pipe for High-Temperature Service
ASTM A 213 – Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A 269 – Seamless and Welded Austenitic Stainless Steel Tubing for General Service
ASTM A 312 – Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
ASTM A 333 – Seamless and Welded Steel Pipe for Low-Temperature Service
ASTM A 335 – Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
ASTM A 358 – Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications
ASTM A 671 – Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures
ASTM A 672 – Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures
ASTM A 790 – Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
ASTM A 928 – Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
EN 10208-2 – Steel pipes for pipelines for combustible fluids – Part 2: Pipes of requirement class B
EN 10210-1/2 – Hot finished structural hollow sections of non-alloy and fine grain steels
EN 10216-1 – Seamless steel tubes for pressure purposes – Part 1: Non-alloy steel tubes with specified room temperature properties
EN 10216-2 – Seamless steel tubes for pressure purposes – Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
EN 10217-1 – Welded steel tubes for pressure purposes – Part 1: Non-alloy steel tubes with specified room temperature properties
EN 10217-2 – Welded steel tubes for pressure purposes – Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties
EN 10219-1/2 – Cold formed welded structural hollow sections of non-alloy and fine grain steels
EN 10297-1 – Seamless circular steel tubes for mechanical and general engineering purposes – Part 1 Non-alloy and alloy steel tubes

Grade:

API 5L Gr. A, B, X42, X52, X60, X65, X70
ASTM A 53 Gr. A, Gr. B
ASTM A106 Gr. A, B, C
ASTM A 213 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H, T5, T9, T11
ASTM A 269 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H
ASTM A 312 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H
ASTM A 333 Gr. 3, Gr. 6 ASTM A 335 P1, P2, P5, P9, P11, P12, P22, P91, P92
ASTM A 358 TP 304, 304L, 304H, 316, 316L, 316H, 321, 321H
ASTM A 671 CC 60, CC 65, CC 70
ASTM A 672 CC 60, CC 65, CC 70
ASTM 790 UNS S31803, UNS S32205, UNS S32750, UNS S32760
ASTM A928
EN 10208-2 L245, L 290, L360
EN 10210-1 S235 JRH, S275 JOH, S275 J2H, S355 JOH, S355 J2H
EN 10216-1 P235 TR1/2
EN 10216-2 P235 GH, P265 GH
EN 10217-1 P235 TR1/2, P275 TR1/2
EN 10217-2 P235 GH, P265 GH
EN 10219-1 S235 JRH, S275 JOH, S275 J2H, S355 JOH, S355 J2H
EN 10297-1 E235, E275, E315, E355, E470

LTCS ASTM A333 Pipe