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牌號 A841 Grades B Class 2
對應(yīng)標(biāo)準(zhǔn) ASTM A841/A841M-2017
通過熱機(jī)械控制工藝生產(chǎn)的壓力容器用鋼板
Steel Plates for Pressure Vessels, Produced by ThermoMechanical Control Process (TMCP)
歸類 合金鋼
A841 Grades B Class 2 化學(xué)元素成分含量(%)
  成分 C Si Mn ① P S Cr Ni Cu Mo V Nb Al ② 更多
t≤40mm 最小值 - 0.15 0.7 - - - - - - - - 0.02 Alt≥0.02或Als≥0.015
最大值 0.15 0.5 1.35 0.03 0.025 0.25 0.6 0.35 0.3 0.06 0.03 -
  成分 C Si Mn P S Cr Ni Cu Mo V Nb Al ② 更多
t＞40mm 最小值 - 0.15 1 - - - - - - - - 0.02 Alt≥0.02或Als≥0.015
最大值 0.15 0.5 1.6 0.03 0.025 0.25 0.6 0.35 0.3 0.06 0.03 -
① Manganese may exceed 1.35 % on heat analysis, up to a maximum of 1.60 %, provided that the carbon equivalent on heat analysis does not exceed 0.47 %, or the value specified in Supplementary Requirement S77 when that requirement is invoked, when based on the following formula：
CE = C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15%
When this option is exercised, the manganese content on product analysis shall not exceed the heat analysis content by more than 0.12 percentage points.
② By agreement, the steel may be produced with titanium, in which case the minimum aluminum content shall not apply. When this option is exercised, the titanium content, by heat analysis, shall be .006 % to 0.02 %, and the actual titanium content shall be reported on the test report.
A841 Grades B Class 2 機(jī)械性能
抗拉強(qiáng)度
σb
Mpa 		屈服點(diǎn)
σs
Mpa 		斷后伸長率或延伸率
δ
%
t≤65 550~690 ≥415 (50mm)
≥22
t＞65 515~655 ≥380 ≥22
L0-標(biāo)距
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