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Grade 616
USA UNS S42200
Corresponding Standard ASTM A565/A565M-2010(R2025)
Martensitic Stainless Steel Bars for High-Temperature Service
Classification Martensitic Stainless Steel
616 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo W V
Minimum Value 0.2 - 0.5 - - 11 0.5 0.9 0.9 0.2
Maximum Value 0.25 0.5 1 0.025 0.025 12.5 1 1.25 1.25 0.3
616 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Specified Plastic Yield Strength
Rp0.2
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
% 		Hardness
HBW 		Impact Energy Absorption
KV2
J
HT - Heat treated (for high-temperature service) ≥965 ≥760 ≥13 ≥30 302~352 ≥11
H - Heat treated ≥825 ≥585 ≥17 ≥35 241~285 /
T - Heat treated (for machining) / / / / ≤285 /
A - Annealed / / / / ≤248 /
* Hardness taken at the surface for control purposes only. For acceptance purposes, tensile properties govern.
① HT - Heat treated (for high-temperature service)：1875 to 1925°F [1020 to 1050°C], quench in air or oil and temper at 1150°F [620°C) min for 2 h min.
② H - Heat treated：1875 to 1925°F [1020 to 1050°C], quench in air or oil and temper at 1250°F (675°C] min for 2 h min.
1 Approximate Comparison Table Martensitic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States Germany
GB ISC CNS JIS KS ASTM UNS DIN EN/DIN W-Nr.
22Cr12NiWMoV
(2Cr12NiWMoV) 		S47220 SUH 616 SUH 616 STR 616 616 S42200 X20CrMoWV 12-1 1.4935
2 Approximate Comparison Table Martensitic Stainless Steel
China Japan United States International Organization for Standardization European Standard
ISC JIS UNS ISO Numerical Grade Numerical Grade
S47220 SUH616 S42200 X23CrMoWMnNiV12-1-1 4929-422-00-I (1.4929)
616 Corresponding Standards(Same grade name, different standards)
1 ASTM A959-2004
616 S42200
2 ASTM A565/A565M-2010(R2017)
616 S42200
3 ASTM A959-2019
616 S42200
4 GJB 1496B-2014
616 22SiMn2TiB
5 ASTM A565/A565M-2010(R2025)
616 S42200

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