Grade 80Cr20Si2Ni
China ISC S48380
Old Grade
Corresponding Standard GB /T 1221-2007
Heat-resistant Steel Bars
Classification Martensitic Stainless Steel
80Cr20Si2Ni Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value 0.75 1.75 0.2 - - 19 1.15
Maximum Value 0.85 2.25 0.6 0.03 0.03 20.5 1.65
80Cr20Si2Ni Mechanical Properties
diameter
d
mm
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
d≤75 Quenching + Tempering
≥885
Quenching + Tempering
≥685
Quenching + Tempering
≥10
Quenching + Tempering
≥262
Annealing
≤321
1 Approximate Comparison Table Martensitic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States Germany France United Kingdom
GB ISC CNS JIS KS UNS SAE DIN EN/DIN W-Nr. NF EN/NF BS EN/BS
80Cr20Si2Ni
(8Cr20Si2Ni)
S48380 SUH 4 SUH 4 STR 4 S65006 HNV6 X80CrNiSi 20 1.4747 Z80CSN 20-02 443S65
2 Approximate Comparison Table Valve Steel
China Taiwan, China Japan South Korea United States Germany France European Standard Russia United Kingdom
GB ISC CNS JIS KS Commercial Grade UNS SAE DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
80Cr20Si2Ni
(8Cr20Si2Ni)
S48380 4 SUH 4 STR 4 Sil XB S65006 HNV6 X80CrSiNi 20 1.4747 Z80CNS 20-02 X80CrSiNi 20 1.4747 80Х20Н2С2 443S65
3 Approximate Comparison Table Martensitic Stainless Steel
China Japan International Organization for Standardization European Standard
ISC JIS ISO Numerical Grade Numerical Grade
S48380 SUH4 X80CrSiNi20-2 4766-440-77-X (1.4766)

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