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309C40簡介

牌號 309C40
對應(yīng)標準 BS 3100-1991
一般工程用鑄鋼件
Specification for Steel castings for general engineering purposes
歸類 鑄鋼
性能 耐腐蝕
標簽 耐熱不銹鑄鋼
309C40 化學(xué)元素成分含量(%)
成分 C Si Mn P S Cr Ni Mo
最小值 - - - - - 25 8 -
最大值 0.5 2 2 0.05 0.05 30 12 1.5
碳當量計算
309C40 機械性能
熱處理或狀態(tài)
抗拉強度
σb
屈服點
σs
斷后伸長率或延伸率
δ
% 		硬度
HBW 		沖擊吸收能量
KV2
J
N或N+T或QQ+T或WQ+T 540~690 ≥320 ≥16 152~207 ≥30
A=for anneal by heating to a temperature above the AC3 and cool in the furnace
N=for normalize by heating to a temperature above the AC3 and cool in still air
OQ=for quench into oil from a temperature above the AC3
WQ=for quench into water from a temperature above the AC3
AH=for air harden by heating to a temperature above the AC3 and cool in air at a rate fast enough to produce a hardened microstructure
T=for temper by heating to a temperature below AC1
ST=for solution treat by heating to temperature high enough to dissolve and any intermetallic phases followed by a rapid cool.
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