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A620 Type B簡介

牌號(hào) A620 Type B
對(duì)應(yīng)標(biāo)準(zhǔn) ASTM A620/A620M-1997
冷軋?zhí)妓乩其摪?
Drawing Steel (DS), Sheet, Carbon, Cold-Rolled
歸類 碳鋼
A620 Type B 化學(xué)元素成分含量(%)
成分 C Mn P S Cr ②③ Ni ② Cu ② Mo ② Ti ④ V Nb ④ Al
最小值 0.02 - - - - - - - - - - 0.01
最大值 0.08 0.5 0.02 0.03 0.15 0.2 0.2 0.06 0.008 0.008 0.008 -
① Specify Type B to avoid carbon levels below 0.02 %.
② The sum of copper, nickel, chromium, and molybdenum shall not exceed 0.50 % on heat analysis. When one or more of these elements is specified, the sum does not apply; in which case, only the individual limits on the remaining elements will apply.
③ Chromium is permitted at the producer option, to 0.25 % maximum when the carbon is less than or equal to 0.05 %. In such case, the limit on the sum of the four elements in Footnote ② does not apply.
④ For carbon levels less than or equal to 0.02 %, columbium and/or titanium may be used as chemical stabilizing elements at the producer option. When such is the case, the limits above do not apply to those elements. Rather, the limit on columbium shall be 0.10% maximum and the limit on titanium shall be 0.15% maximum. 碳當(dāng)量計(jì)算
A620 Type B 機(jī)械性能
屈服點(diǎn)
σs
Mpa 		斷后伸長率或延伸率
δ
%
150~240 ≥36
注：Yield strength and elongation are measured in the longitudinal direction in accordance with Specification A370.
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