Grade F879 Group 1-CW1 18-9LW
USA UNS S30430
Corresponding Standard ASTM F879-2015
Stainless Steel Socket Button and Flat Countersunk Head Cap Screws
Classification Austenitic Stainless Steel
F879 Group 1-CW1 18-9LW Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu
Minimum Value - - - - - 17 8 3
Maximum Value 0.1 1 2 0.045 0.03 19 10 4
F879 Group 1-CW1 18-9LW Mechanical Properties
Tensile Strength
σb
ksi
Yield Point
σs
ksi
Elongation or Extension Rate
δ
%
Impact Energy Absorption
KV2
J
Full-Size ≥102 HRA
≥59
Machined ≥87 ≥65 ≥20 ≥59
1 Approximate Comparison Table Austenitic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard
GB ISC CNS JIS KS ASTM/AISI UNS ISO Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade
06Cr18Ni9Cu3 S30488 XM7 SUS XM7 STS XM7 XM7 S30430 X3CrNiCu 18-9-4 4567-304-30-I X3CrNiCu 18-9 1.4567 Z3CNU 18-10 X3CrNiCu 18-9-4 1.4567
2 Approximate Comparison Table Austenitic Stainless Steel
Japan United States France European Standard United Kingdom
JIS UNS NF EN/NF EN Numerical Grade BS EN/BS
SUSXM7 S30430 Z3CNU18-09FF
Z3CNU18-10
Z3CNU18-10FF
X3CrNiCu18-9-4 1.4567 304S17

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