A320 B8FA Class 1A S30300 303 - ASTM A320/A320M-2018

Grade	A320 B8FA Class 1A
USA UNS	S30300
Other Names
Corresponding Standard	ASTM A320/A320M-2018 Alloy-steel and stainless steel bolting for low-temperature service
Classification	Alloy Steel

A320 B8FA Class 1A Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni
Minimum Value	-	-	-	-	0.15	17	8
Maximum Value	0.15	1	2	0.2	-	19	10

Note: Except as specified, intentional addition of Bi, Se, Te, and Pb is not permitted.

A320 B8FA Class 1A Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Carbide Solution Treatment in Finished Condition	≥515	≥205	≥30	≥50	≤192

Approximate Comparison Table

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

European Standard

United Kingdom

ISC

CNS

JIS

ASTM

UNS

ISO

Numerical Grade

DIN EN/DIN

W-Nr.

NF EN/NF

Numerical Grade

BS EN/BS

Y12Cr18Ni9
(Y1Cr18Ni9)

S30317

303

SUS 303

STS 303

303

S30300

X10CrNiS 18-9

4305-303-00-I

X8CrNiS 18-9
(X10CrNiS 18-9)

1.4305

Z10CNF 18-09

X8CrNiS 18-9

1.4305

303S21

A320B8FAClass1A Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!