ASTM A336 Seamless Steel Pipe

ASTM A336 covers ferritic steel forgings for boilers, pressure vessels, high temperature parts and related equipment.

Forgings made of the steel grades listed in specification A335 / A335m can also be ordered in accordance with this specification.
The chemical, tensile, heat treatment and marking requirements of specification A335 / A335m shall apply.

ASTM Standard for seamless steel pipe:

Executive Standard	Grade / Material	Product Name
ASTM A53	A, B	Black and Hot-Dipped Zinc-Coated Steel Pipes Welded and Seamless
ASTM A106	A, B	Seamless Carbon Steel for High Temperature Service
ASTM A179	Low Carbon Steel	Seamless Cold-Drawn Low-Carbon Steel Heat Exchanger and Condenser Tubes
ASTM A192	Low Carbon Steel	Seamless Carbon Steel Boiler Tubes for High Pressure
ASTM A210	A1, C	Seamless Medium-Carbon and Alloy Steel Boiler and Superheater Tubes
ASTM A213	T5, T11, T12, T22	Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-Exchanger Tubes
	TP 347H
ASTM A312	TP304/304L, TP316/316L	Seamless Steel Pipe for Stainless Materials
ASTM A333	Gr.6	Seamless and Welded Steel Pipe for Low-Temperature Service
ASTM A335	P9, P11, P22	Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM A519	41,304,140	Seamless Carbon and Alloy Steel for Mechanical Tubing
ASTM A789		Seamless Ferritic/Austenitic Stainless Steel Tubing for General Service

API Standard for seamless steel pipe:

Executive Standard	Grade / Material	Product Name
API Spec 5CT	J55, K55, N80, L80,C90, C95, T95, P110, M65	Spectification for Casing and Tubing
API Spec 5L PSL1 / PSL2	A,B X42, X46, X52, X56, X60, X65,X70	Specification for Line Pipe

DIN / EN Standard for seamless steel pipe

Executive Standard	Grade / Material	Product Name
DN 17175/EN10216-2	ST35, ST45, ST52, 13CrMo44	Seamless Steel Tube for Elevated Temperature
DIN 2391/EN10305-1	St35, St45, St52	Cold Drawn Seamless Precision Pipe
DIN 1629/EN10216-1	St37, St45, St52	Seamless Circular unalloyed Steel Tubes Subject to Special Requirments

ASTM A336 Heat Treatment :-
1. Except as permitted in ‘point 3’ for Grade F22V, and in ‘point 4’ for Grade F91 and Grade F92, the steel
forgings shall be annealed or normalized and tempered but alternatively may be liquid quenched and
tempered when mutually agreed upon between the manufacturer and the purchaser.
2. For all grades, normalizing or liquid quenching shall be followed by tempering at a subcritical temperature
as shown in table 1.
3. Grade F22V forgings shall be normalized and tempered or liquid quenched and tempered at the
manufacturer’s option. For Grade F22V forgings the minimum austenitizing temperature shall be 1650°F
[900°C].
4. Grade F91 forgings having any section thickness greater than 3 in. [75 mm] shall be normalized and
tempered or liquid quenched and tempered at the manufacturer’s option. Grade F92 forgings shall be
normalized and tempered or liquid quenched and tempered at the manufacturer’s option.
5. For Grade F91, F911, and F92 forgings, the austenitizing temperature shall be in the range of 1900 to 1975°F
[1040 to 1080°C].
6. For Grade F6NM the austenitizing temperature shall be 1850°F [1010°C] minimum.

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