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Grade A193 B8P Class 1D
USA UNS S30500
Corresponding Standard ASTM A193/A193M-2019
Alloy-steel and stainless steel bolting for high temperature or high pressure service and other special purpose applications
Classification Austenitic Stainless Steel
Properties Corrosion Resistance
A193 B8P Class 1D Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value - - - - - 17 11
Maximum Value 0.12 1 2 0.045 0.03 19 13
Note: The intentional addition of Bi, Se,Te, and Pb is not permitted
A193 B8P Class 1D Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
% 		Hardness
HBW
Carbide Solid Solution Treatment ≥515 ≥205 ≥30 ≥50 ≤223
1 Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
10Cr18Ni12 S30510 305 SUS 305 STS 305 305 S30500 X6CrNi 18-12 X5CrNi 18-12
(X5CrNi 19-11)
X4CrNi 18-12 		1.4303
1.4303 		Z8CN 18-12 X4CrNi 18-12 1.4303 12Х18Н12Т 305S19
2 Approximate Comparison Table
China Japan United States International Organization for Standardization European Standard
ISC JIS UNS ISO Numerical Grade Numerical Grade
S38148 SUSXM15J1 S30500 X6CrNiSi18-13-4 4884-305-00-X (1.4884)
3 Approximate Comparison Table Stainless steels for cold heading and cold extruding
China Japan United States International Organization for Standardization European Standard
GB ISC JIS ASTM/AISI UNS ISO Numerical Grade EN Numerical Grade
10Cr18Ni12
(1Cr18Ni12) 		S30510 SUS305 305 S30500 X6CrNi18-12 4303-305-00-I X6CrNi18-12 1.4303
A193B8PClass1D Corresponding Standards(Same grade name, different standards)
1 ASTM A193/A193M-2001
A193 B8P Class 1D S30500 305
2 ASTM A193/A193M-2019
A193 B8P Class 1D S30500
3 ASTM A193/A193M-2020
A193 B8P Class 1D S30500

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