You location: Home > ASTM A 333 GR.6 steel pipe

ASTM A 333 GR.6 steel pipe

ASTM A333 Gr 6

Seamless and Welded Steel Pipe for Low-Temperature Service

GRADE

Grade 1, Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10, Grade 11

ASTM A333 A333 GR6 steel pipe for low pressure vessel pipe heat exchanger pipeline

low temperature Apply to-45 °C ~ 195 °C level-low temperature and

Chemical Requirements

		Composition, %
Element	Grade 1	Grade 3	Grade 6
Carbon, max	0.30	0.19	0.30
Manganese	0.40 - 1.06	0.31 - 0.64	0.29 - 1.06
Phosphorous, max	0.025	0.025	0.025
Sulfur, max	0.025	0.025	0.025
Silicon		0.18 -0.37	0.10 min
Nickel		3.18 - 3.82

ASTM A333 GR.6 steel pipe

ASTM A333 GR.6 PIPE

For each reduction of 0.01% carbon below 0.30%, an increase of 0.05% manganese above 1.06% would be permitted to a maximum of 1.35% manganese.

When Grade 6 is ordered under this specification, supplying an alloy grade that specifically requires the addition of any element other than those listed for the ordered grade is not permitted. However, the addition of elements required for the deoxidation of the steel is permitted.

	Grade 1		Grade 3		Grade 6
	psi	MPa	psi	MPa	psi	MPa
Tensile Strength, min	55,000	380	65,000	450	60,000	415
Yield Strength, min	30,000	205	35,000	240	35,000	240
	Longitudinal	Transverse	Longitudinal	Transverse	Longitudinal	Transverse
Elongation in 2 in. or 50 mm, (or 4D), min, %:
Basic minimum elongation for walls 5/16 in. [8 mm] and over in thickness, strip tests, and for all small sizes tested in full section	35	35	30	20	30	16.5
When the standard round 2-in. or 50-mm gage length or proportionally smaller size test specimen with the gage length equal to 4D (4 times the diameter) is used	28	20	22	14	22	12
For strip tests, a deduction for each 1/32in. [0.8 mm] decrease in wall thickness below 5/16 in. [8 mm] from the basic minimum elongation of the following percentage	1.75	1.25	1.50	1.00	1.50	1.00

	Elongation in 2 in. or 50 mm, min, %:

Wall Thickness		Grade 1		Grade 3		Grade 6
in.	mm	Longitudinal	Transverse	Longitudinal	Transverse	Longitudinal	Transverse
5/16 (0.312)	8	35	25	30	20	30	16
9/32 (.281)	7.2	33	24	28	19	28	15
1/4 (.250)	6.4	32	23	27	18	27	15
7/32 (.219)	5.6	30		26		26
3/16 (.188)	4.8	28		24		24
5/32 (.156)	4	26		22		22
1/8 (.125)	3.2	25		21		21
3/32 (.094)	2.4	23		20		20
1/16 (.063)	1.6	21		18		18