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A249 TP202简介

牌号 A249 TP202
美国UNS S20200
对应标准 ASTM A249/A249M-2018
焊接奥氏体钢锅炉、过热器、热交换器和冷凝器管
Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
归类 奥氏体不锈钢
A249 TP202 化学元素成分含量(%)
成分 C Si Mn P S Cr Ni N
最小值 - - 7.5 - - 17 4 -
最大值 0.15 1 10 0.06 0.03 19 6 0.25
碳当量计算
A249 TP202 机械性能
热处理或状态
抗拉强度
σb
Mpa
屈服点
σs
Mpa
断后伸长率或延伸率
δ
%
硬度
HBW
Solutioning Temperature 1040℃ ≥620 ≥260 ≥35 HRB
≤95
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 近似对照表 奥氏体不锈钢
中国 中国台湾 日本 韩国 美国 欧标 俄罗斯 英国
GB ISC CNS JIS KS ASTM UNS EN 数字牌号 GOST BS EN/BS
12Cr18Mn9Ni5N S35450 202 SUS 202 STS 202 202 S20200 X12CrMnNi 18-9-5 1.4373 12Х17Г9АН4 284S16
2 近似对照表 奥氏体不锈钢
中国 日本 美国 国际标准组织 欧标
ISC JIS UNS ISO 数字牌号 数字牌号
S35450 SUS202 S20200 X12CrMnNiN18-9-5 4373-202-00-I 1.4373
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