ASTM A333 Low Temperature Pipe

ASTM A333 (ASME S/A-333) Pipe grades permit low temperature service. This specification covers nominal (average) walled pipe almost exclusively in seamless.

ASMT A333 Grade 1 seamless and welded pipes

AASTM A333 Grade 1 Seamless Pipe

A333 Gr.6 seamless pipe

ASMT A333 Grade 3 seamless and welded pipes

ASTM A333 Grade 3 Seamless Pipe

ASTM A333 Gr.8 Ultra-low temperature steel pipe

ASTM A333 Grade 9 Seamless Pipe

ASTM A333 Grade 7 Seamless Pipe

Several grades of ferritic steel are included. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse effect 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.

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

Size range

1/4” Nominal to 24”O.D.
Schedules: STD, 40, XH, 60, 80, 100, 120, 140, 160, XXH
Unscheduled heavy wall pipe thicknesses available up to 4 inches.

For low temperature

Production specification range of low temperature pipe products

Pipes are used in low temperature service

Steel pipes are produced accord to ASTM A333 standard

Strike temperature condition：

Crade	The lowest temperature for strike test
Crade	℉	℃
ASTM A333 Grade 1	-50	-45
ASTM A333 Grade 6	-50	-45

Mechanical requiremnts of ASTM A333 alloy pipe

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

Chemical Composition (%) of ASTM A333 steel pipe

Grade	Chemical Composition (%)
Grade	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V	Al
Grade 1	≤0.30		0.40-1.06	≤0.025	≤0.025
Grade 3	≤0.19	0.18-0.37	0.31-0.64	≤0.025	≤0.025		3.18-3.82
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
Grade 6	≤0.30	≥0.10	0.29-1.06	≤0.025	≤0.025
Grade 7	≤0.19	0.13-0.32	≤0.90	≤0.025	≤0.025		2.03-2.57
Grade 8	≤0.13	0.13-0.32	≤0.90	≤0.025	≤0.025		8.40-9.60
Grade 9	≤0.20		0.40-1.06	≤0.025	≤0.025		1.60-2.24	0.75-1.25
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
Grade 11	≤0.10	≤0.35	≤0.6	≤0.025	≤0.025	≤0.50	35.0-37.0		≤0.50

Heat Treatment:

Grades 1 and 6 shall be heat treated to control their microstructure.

ASTM A333 Grade 6 and ASME SA 333 Grade 6 are heat treated to achieve normalized condition @ 920 degrees Celsius with controlled microstructure.

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

Specific Impact requirements

The raw material used for low temperature service pipe is ALUMINIUM killed with high proportion of manganese (more than 1%) combined with low proportions of carbon (less than 0.23%).For low temperature pipe to be certified as LTCS additional impact test should be conducted at low temperatures, as per mandatory requirements in section 8 of ASTM A 333.

Alloy steel specification, Standard and identification

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.