Chemical Composition and Mechanical Properties of ASTM A387 GR11 CL1 Steel Plate
Hit：152026-05-22 11:06:23
Chemical Composition and Mechanical Properties of ASTM A387 GR11 CL1 Steel Plate
ASTM A387 Gr11 CL1 (SA387Gr11CL1) is an American standard chromium molybdenum alloy pressure vessel steel plate. The following are the chemical composition and mechanical performance parameters after information arbitration:
1、 Chemical composition (mass fraction,%)
There are differences in data from different sources, and the mainstream labeling of ASME standards shall prevail. The parameter range is as follows:
Explanation of Element Content Range
C 0.05~0.17 fixed range
Si 0.50~0.80 fixed range
Mn 0.40~0.70 is labeled as 0.40~0.65 from different sources, with minimal differences
P ≤ 0.035 upper limit requirement
S ≤ 0.035 upper limit requirement
Cr 1.00~1.50 This data is a clear annotation of Gr11 CL1 standard, and the 2.25~2.75% mentioned by some sources is actually the composition range of Gr22
Mo 0.45~0.65 This data is a clear annotation of Gr11 CL1 standard, and some sources mention 0.90~1.10%, which is actually the composition range of Gr22
2、 Mechanical performance
The core mechanical performance parameters required by the standard are as follows:
Tensile strength σ b: ≥ 440MPa
Yield strength σ s: ≥ 295MPa
Elongation rate δ 5: ≥ 22%
Shrinkage rate of cross-section: ≥ 60%
Impact energy Akv: ≥ 94J
Impact toughness value α kv: ≥ 118J/cm ²
Hardness: ≤ 179HB
This steel plate corresponds to the domestic grade 14Cr1MoR and is mainly used for high-temperature pressure vessels and boiler components in the petrochemical and power industries. The long-term working temperature can be controlled within 500 ℃, and it has good high-temperature strength, creep resistance, and corrosion resistance
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