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美國UNS S31726
對應(yīng)標(biāo)準(zhǔn) ASTM A249/A249M-2018
焊接奧氏體鋼鍋爐呈枉、過熱器脉鼻、熱交換器和冷凝器管
Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
歸類 奧氏體不銹鋼
化學(xué)元素成分含量(%)
成分 C Si Mn P S Cr Ni Mo N
最小值 - - - - - 17 14.5 4 0.1
最大值 0.03 1 2 0.045 0.03 20 17.5 5 0.2
機(jī)械性能
熱處理或狀態(tài)
抗拉強度
σb
Mpa
屈服點
σs
Mpa
斷后伸長率或延伸率
δ
%
硬度
HBW
Solutioning Temperature 1040℃ ≥550 ≥240 ≥35 HRB
≤90
注:Quenched in water or rapidly cooled by other methods, at a rate sufficient to prevent reprecipitation of chromium carbides, as demonstrated by the capability of passing Practices A262, Practice E. The manufacturer is not required to run the test unless it is specified on the purchase order (See Supplementary Requirement S6). Note that Practices A262 requires the test to be performed on sensitized specimens in the low carbon and stabilized types and on specimens representative of the as-shipped condition of the other types. In the case of low-carbon types containing 3 % or more molybdenum, the applicability of the sensitizing treatment prior to testing shall be a matter for negotiation between the seller and purchaser.
1 近似對照表 奧氏體不銹鋼
中國 美國 國際標(biāo)準(zhǔn)組織 歐標(biāo)
GB ISC AISI UNS ISO 數(shù)字牌號 EN 數(shù)字牌號
022Cr19Ni16Mo5N S31723 317LMN S31726 X2CrNiMoN17-13-5
X2CrNiMoN 18-15-5
4439-317-26-E
4483-317-26-I
X2CrNiMoN17-13-5 1.4439
(1.4483)
2 近似對照表 奧氏體不銹鋼
美國 法國 歐標(biāo)
ASTM UNS NF EN/NF EN 數(shù)字牌號
317LMN S31726 Z3CND18-14-05Az X2CrNiMoN17-13-5 1.4439
注:數(shù)據(jù)僅供參考!如有疑問,請?zhí)顚?我要糾錯"!
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