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Grade B6
USA UNS S41000
Other Names
Corresponding Standard ASTM A193/A193M-2001
Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Servise
Classification Ferritic Stainless Steel
Properties Corrosion Resistance High-Temperature Strength
B6 Chemical Element Composition Content (%)
Component C Si Mn P S Cr
Minimum Value - - - - - 11.5
Maximum Value 0.15 1 1 0.04 0.03 13.5
Note: The intentional addition of Bi, Se, Te, and Pb is not permitted.
B6 Mechanical Properties
diameter
d
mm		 Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
%
d≤M100(B6) ≥760 ≥580 ≥15 ≥50
New and Old Grade Replacement List
Corresponding Standard Grade
ASTM A193/A193M-2001
Grade
USA UNS
Other Name
ASTM A193/A193M-2019
Grade
USA UNS
Other Name
1 Approximate Comparison Table Martensitic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
12Cr13
(1Cr13) 		S41010 410 SUS 410 STS 410 410 S41000 X12Cr 13 4006-410-00-I X10Cr 13
X12Cr 13 		1.4006
1.4006 		Z12C 13
Z10C13 		X12Cr 13 1.4006 12Х13
12KH13
15KH13L 		2302 410S21
2 Approximate Comparison Table Martensitic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
12Cr13
(1Cr13) 		S41010 410 SUS 410 STS 410 410 S41000 X12Cr 13
3
(ISO 683-13-1986) 		X10Cr 13 1.4006 Z12C 13 X12Cr 13 1.4006 12Х13 2302 410S21
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
12Cr13
(1Cr13) 		S41010 SUS410 410 S41000 X12Cr13 4006-410-00-I X12Cr13 1.4006
B6 Corresponding Standards(Same grade name, different standards)
1 ASTM A193/A193M-2001
B6 S41000 410
2 ASTM A485-2014
B6 A485 100CrMo 7-3
3 ASTM A485-2017
B6 100CrMo7-3
4 BS 3100-1991
B6

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