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A249 TP347H簡介

牌號(hào) A249 TP347H
美國UNS S34709
對(duì)應(yīng)標(biāo)準(zhǔn) ASTM A249/A249M-2018
焊接奧氏體鋼鍋爐、過熱器、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
A249 TP347H 化學(xué)元素成分含量(%)
成分 C Si Mn P S Cr Ni 更多
最小值 0.04 - - - - 17 9 Nb(Cb)：8C~1.10
最大值 0.1 1 2 0.045 0.03 19 12
碳當(dāng)量計(jì)算
A249 TP347H 機(jī)械性能
熱處理或狀態(tài)
抗拉強(qiáng)度
σb
Mpa 		屈服點(diǎn)
σs
Mpa 		斷后伸長率或延伸率
δ
% 		硬度
HBW
Solutioning Temperature 1100℃ ≥515 ≥205 ≥35 HRB
≤90
注1：Quenched in water or rapidly cooled by other methods.
注2：A solution treating temperature above 1950 °F [1065 °C] may impair resistance to intergranular corrosion after subsequent exposure to sensitizing conditions in the indicated grades. When specified by the purchaser, a lower temperature stabilization or re- solution anneal shall be used subsequent to the higher-temperature solution anneal prescribed in this table (See Supplementary Requirement S4).
近似對(duì)照表 奧氏體不銹鋼
中國 日本 美國 國際標(biāo)準(zhǔn)組織 法國 歐標(biāo)
ISC JIS ASTM UNS ISO 數(shù)字牌號(hào) NF EN/NF EN 數(shù)字牌號(hào)
S34779 SUS347H 347H S34709 X7CrNiNb18-10 4912-347-09-I Z2CND17-11
Z2CND18-13
Z8CNNb18-10 		X7CrNiNb18-10 1.4912
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