Grade A249 TP202
USA UNS S20200
Corresponding Standard ASTM A249/A249M-2018
Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
Classification Austenitic Stainless Steel
A249 TP202 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni N
Minimum Value - - 7.5 - - 17 4 -
Maximum Value 0.15 1 10 0.06 0.03 19 6 0.25
A249 TP202 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
Solutioning Temperature 1040℃ ≥620 ≥260 ≥35 HRB
≤95
1 Approximate Comparison Table
China Taiwan, China Japan South Korea United States European Standard Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS EN Numerical Grade GOST BS EN/BS
12Cr18Mn9Ni5N S35450 202 SUS 202 STS 202 202 S20200 X12CrMnNi 18-9-5 1.4373 12Х17Г9АН4 284S16
2 Approximate Comparison Table
China Japan United States International Organization for Standardization European Standard
ISC JIS UNS ISO Numerical Grade Numerical Grade
S35450 SUS202 S20200 X12CrMnNiN18-9-5 4373-202-00-I 1.4373
A249TP202 Corresponding Standards(Same grade name, different standards)

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