ASTM A192 Standard Specification for Seamless Carbon Steel Boiler Tubes for High-Pressure Service

ASTM A192 covers standard specifications for minimum-wall-thickness, seamless carbon steel boiler and superheater tubes for high-pressure service. The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, and silicon. The tubes shall have a hardness number not exceeding a specific value. The following mechanical tests shall be conducted, namely: flattening test; flaring test; hardness test; and hydrostatic test.

ASTM A 192M High-pressure Steel Boiler Tube

Boiler Tubes Application

The ASTM A192 belongs to the carbon seamless tubes, which is specially designed for high, middle, low pressure purpose in seamless carbon steel boilers and as super heater tubes.

Scope of ASTM A192

1. This specification covers minimum-wall-thickness, seamless carbon steel boiler and superheater tubes for high-pressure service.

2. The tubing sizes and thicknesses usually furnished to this specification are 1/2 in. to 7 in. [12.7 to 177.8 mm] outside diameter and 0.085 to 1.00 in. [2.2 to 25.4 mm], inclusive, in minimum wall thickness. Tubing having other dimensions may be furnished, provided such tubes comply with all other requirements of this specification.

3. Mechanical property requirements do not apply to tubing smaller than 1/8 in [3.2 mm] inside dimeter or 0.015 in. [0.4 mm] thickness.

4 When these products are to be used in applications conforming to ISO Recommendations for Boiler Construction, the requirements of specification A 520 shall supplement and supersede the requirements of this specification.

5. The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.

ASTM A192 covers minimum-wall-thickness, seamless carbon steel boiler tubes and superheater tubes for high pressure service. The tubing sizes and thicknesses usually furnished to this specification are 1/2 in. to 7 in. [12.7 to 177.8 mm] outside diameter and 0.085 to 1.00 in. [2.2 to 25.4 mm], inclusive, in minimum wall thickness. Tubing having other dimensions may be furnished, provided such tubes comply with all other requirements of this specification.

Mechanical properties requirements do not apply to tubing smaller than 1/8 inch [3.2 mm] inside dimeter or 0.015 inch. [0.4 mm] thickness. When these products are to be used in applications conforming to ISO Recommendations for Boiler Construction, the requirements of ASTM A520 shall supplement and supersede the requirements of this specification.

The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.

Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.

Features

ASTMA179/ASME SA179 standard is applicable for steel pipes together with outside diameter of 1/8in-3in. (32 mm to 76.2 mm). Our rolling technology has reached the international advanced spot. JST is able to manufacture cold drawn seamless steel tubes with uniform wall depth. Their tolerance is relatively smaller standard your own.

When seamless carbon steel pipes are during the last cold drawing procedure, they will enter micro oxidization and non-oxidation heat treatment furnace for thermal treatment (Temperature is 1200℉ (650℃) if not more.). This makes the surface of cold drawn seamless steel tubes match the no oxide scale standards, and guarantees smooth surface and stable performance.

JST adopts professional hardness testing equipment to find out the hardness of seamless carbon steel pipes. The Rockwell hardness value not able to exceed 72 HRB.

Top rated program customers’ requirements, we can analyze the cold drawn seamless steel tube advertise its chemical composition meet standards. We choose one from 250 pipes or select one in a furnace to investigate. If the product analysis fails, then choose another two seamless carbon steel pipes. All elements of two steel pipes tend to be in accordance with standards, and then these pipes can be delivered.

Application

Chemical compositions(%) of ASTMA 192M / ASME SA-192M

C	Si	Mn	P	S
0.06-0.18	≤0.25	0.27-0.63	≤0.035	≤0.035

Mechanical properties of ASTM A 192M / ASME SA-192M

Yield Strength (Mpa)	Tensile Strength (Mpa)	Elongation (%)
≥180	≥325	≥35

Hydrostatic test pressures of ASTM A192M / ASME SA-192M

Each tube shall be subjected to the hydrostatic pressure test, or instead of this test, a nondestructive test may be used when specified by the purchaser.

Outside Diameter of Tube, in. [mm]	Hydrostatic Test Pressure, psi [MPa]
Under 1 [25.4]	1000 [7]
1 to 11⁄2 [25.4 to 38.1], excl	1500 [10]
11⁄2 to 2 [38.1 to 50.8], excl	2000 [14]
2 to 3 [50.8 to 76.2], excl	2500 [17]

ASTM A192 / ASME SA192 Flattening Test

One flattening test shall be made on specimens from each end of two tubes selected from each lot or fraction thereof.

ASTM A192 / ASME SA192 Flaring Test

One flaring test shall be made on specie- men from each end of two tubes selected from each lot or fraction thereof. These tubes shall be selected apart from those used for the flattening test.

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.

Related ASTM A192 / ASME SA192 tubes

Grade		ASTM A192 / ASME SA192
UNS No		K01201
Old British	BS	CFS 320
German	No	17175
	Number	1.0305
Belgian		837
Japanese JIS		D3563 / G3461
French		A49-213
Italian		5462

JIS number and corrensponding foreign standards

JIS			ASTM			BS			DIN			NF			ISO			Index Number
Standard Number	Grade	Tupe	Standard Number	Grade	Tupe	Standard Number	Grade	Tupe	Standard Number	Grade	Tupe	Standard Number	Grade	Tupe	Standard Number	Grade	Tupe
G3461	STB340	C	A161	LC	C	3059	HFS320	C				A49-245	TS34e	C				C010
	(STB35)		A192	-	C	"	CFS320	C				"	TS34c	C
			A226	-	C	"	ERW320	C
			A556	GrA2	C	"	CEW320	C
			A557	GrA2	C	"	S1 360	C
						"	S2 360	C
						"	ERW 360	C
						"	CEW360	C
						3606	ERW320	C
						"	CEW320	C
						"	CFS320	C
	STB410	C	A179	GrC	C	3059	S1 440	C	17175	St45.8	C	A49-213	TU42c	C	2604-02-01 00:00:00	TS9H	C
	(STB42)		A210	GrA1	C	"	S2 440	C	17177	St42.8	C	A49-215	TU42c	C	"	TW9H	C
			A556	GrB2	C	"	ERW 440	C				A49-243	TS42c
			A557	GrB2	C	"	CEW 440	C				A49-245	TS42c
						3602	HFS 410	C				"	TS42c
						"	CFS 410	C
						"	ERW 410	C
						"	CEW 410	C
						3606	ERW 440	C
						"	CEW 440	C
						"	CFS 440	C
STB510	C							C	17175	19Mn5	C	A49-213	TU52C	C	2604-02-01 00:00:00	TS18	C
(STB52)								C				A49-248	TU52C	C

ASTM A192 Seamless Carbon Steel Tube