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A249 TP304L簡介

牌號 A249 TP304L
美國UNS S30403
對應(yīng)標準 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 TP304L 化學元素成分含量(%)
成分 C Si Mn P S Cr Ni
最小值 - - - - - 18 8
最大值 0.03 1 2 0.045 0.03 20 12
注：For small diameter or thin walls. or both, where many drawing passes are required, a carbon maximum of 0.040 % is necessary in Grades TP304L Small outside diameter tubes are defined as those less than 0.500 inch [12.7 mm] in outside diameter and light wall are those less than 0.049 inch [1.2 mm] in minimum wall thickness. 碳當量計算
A249 TP304L 機械性能
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℃ ≥485 ≥170 ≥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 中國臺灣 日本 韓國 美國 國際標準組織 德國 法國 歐標 俄羅斯 英國
GB ISC CNS JIS KS ASTM UNS ISO 數(shù)字牌號 DIN EN/DIN W-Nr. NF EN/NF EN 數(shù)字牌號 GOST BS EN/BS
022Cr19Ni10
(00Cr19Ni10) 		S30403 304L SUS 304L STS 304L 304L S30403 X2CrNi 19-11
X2CrNi 18-9 		4306-304-03-I
4307-304-03-I 		X2CrNi 19-11
(X2CrNi 18-9) 		1.4306 Z2CN 18-10
Z2CN 18-09 		X2CrNi 19-11
X2CrNi 18-9 		1.4306
1.4307 		03Х18Н10 304S12
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