Grade A249 TP304LN
USA UNS S30453
Corresponding Standard ASTM A249/A249M-2004
Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
Classification Austenitic Stainless Steel
A249 TP304LN Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni N
Minimum Value - - - - - 18 8 0.1
Maximum Value 0.03 1 2 0.045 0.03 20 11 0.16
A249 TP304LN Mechanical Properties
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
≥515 ≥205 ≥35 HRB
≤90
Approximate Comparison Table Austenitic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade SS BS EN/BS
022Cr19Ni10N
(00Cr18Ni10N)
S30453 304LN SUS 304LN STS 304LN 304LN S30453 X2CrNiN 18-9
X2CrNiN18-10
X2CrNiN 18-10 1.4311 Z2CN 18-1Az
Z3CN18-10Az
X2CrNiN 18-10 1.4311 2371 304S62
304S61
A249TP304LN Corresponding Standards(Same grade name, different standards)

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