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Home > News > ASTM A-387/A-387M steel plates for pressure vessels

ASTM A-387/A-387M steel plates for pressure vessels

ASTM A-387/A-387M

Standard: ASTM A-387/A-387M
Steel Grade : A387 GR11 CL1,A387 GR11 CL2, A387 GR22 CL1, A387 GR22 CL2, A387 GR12 CL1, A387 GR12 CL2
Dimension range :1.5mm -260mm x 1000mm-4000mm x 1000mm-18000mm
MOQ: 1 PC
Product type : Steel plate
Delivery time : Promptly ( Stock) or 10-40 days (Production)
Stock : Available
MTC: Available
Payment Term : T/T or L/C At sight .
Latest price:

Specification :
A387 in the standard A-387/A-387M is a kind of Cr-Mo-alloy steel plates material used to fabric high temperature pressure vessels. A387 have ten grades or levels. They are : grade 2, grade 12, grade 11, grade 22, grade 22L, grade 21, grade 21L, grade 5 , grade 9 , grade 91. Because of the good property ,A387 GR11 CL1,A387 GR11 CL2, A387 GR22 CL1, A387 GR22 CL2, A387 GR12 CL1, A387 GR12 CL2 are widely used in the high temperature vessels industry.

ASTM A-387/A-387M steel chemical composition :

Composition		Gr.2	Gr.12	Gr.11	Gr.22	Gr.22L	Gr.21	Gr.21L	Gr.5	Gr.9	Gr.91
Composition		S50460	K11757	K11789	K21590	K21590	K31545	K31545	S50200	K90941	K91560
C	1	0.05~ 0.21	0.05~ 0.17	0.05~ 0.17	0.05~ 0.15	≤0.10	0.05~ 0.15	≤0.10	≤0.15	≤0.15	0.08~ 0.12
C	2	0.04~0.21	0.04~0.17	0.04~0.17	0.04~0.15	≤0.12	0.04~0.15	≤0.12	≤0.15	≤0.15	0.06~0.15
Mn	1	0.55~ 0.80	0.40~ 0.65	0.40~ 0.65	0.30~ 0.60	0.30~ 0.60	0.30~ 0.60	0.30~ 0.60	0.30~ 0.60	0.30~ 0.60	0.30~ 0.60
Mn	2	0.50~ 0.88	0.35~ 0.73	0.35~ 0.73	0.25~ 0.66	0.25~ 0.66	0.25~ 0.66	0.25~ 0.66	0.25~ 0.66	0.25~ 0.66	0.25~ 0.66
P ≤	1	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.030	0.020
P ≤	2	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.030	0.025
S ≤	1	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.030	0.030	0.010
S ≤	2	0.035	0.035	0.035	0.035	0.035	0.035	0.035	0.030	0.030	0.012
Si	1	015~ 0.40	0.15~ 0.40	0.50~ 0.80	≤0.50	≤0.50	≤0.50	≤0.50	≤0.50	≤1.00	0.20~ 0.50
Si	2	0.13~ 0.45	0.13~ 0.45	0.44~ 0.86	≤0.50	≤0.50	≤0.50	≤0.50	≤0.55	≤1.05	0.18~ 0.56
Cr	1	0.50~0.80	0.80~1.15	1.00~1.50	2.00~2.50	2.00~2.50	2.75~3.25	2.75~3.25	4.00~6.00	8.00~10.0	8.00~9.50
Cr	2	0.46~ 0.85	0.74~ 1.21	0.94~ 1.56	1.88~ 2.62	1.88~ 2.62	2.63~ 3.37	2.63~ 3.37	3.90~ 6.10	7.90~ 1.10	7.90~ 9.60
Mo	1	0.45~ 0.60	0.45~ 0.60	0.45~ 0.60	0.90~ 1.10	0.90~ 1.10	0.90~ 1.10	0.90~ 1.10	0.45~ 0.65	0.90~ 1.10	0.85~ 1.05
Mo	2	0.40~ 0.60	0.40~ 0.65	0.40~ 0.70	0.85~ 1.15	0.85~ 1.15	0.85~ 1.15	0.85~ 1.15	0.40~ 0.70	0.85~ 1.15	0.80~ 1.10
Ni	1										≤0.40
Ni	2										≤0.43
V	1									≤0.04	0.18~ 0.25
V	2									≤0.05	0.16~ 0.27
Nb	1										0.06~ 0.10
Nb	2										0.05~ 0.11
N	1										0.03~ 0.07
N	2										0.025~ 0.08
Al	1										≤0.40
Al	2										≤0.50

Note : 1 means Heat analyse ; 2 means Product analyse.

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