A320 B8F Class 2 S30300 303 - ASTM A320/A320M-2024(a)

Grade	A320 B8F Class 2
USA UNS	S30300
Other Names
Corresponding Standard	ASTM A320/A320M-2024(a) Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service
Classification	Austenitic Stainless Steel
Properties	Corrosion Resistance

A320 B8F Class 2 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

A320 B8F Class 2 Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
d≤20	Carbide Solid Solution Treatment with Strain Hardening	≥860	≥690	≥12	≥35	HBW: ≤321 or HRC: ≤35
20＜d≤25	Carbide Solid Solution Treatment with Strain Hardening	≥795	≥550	≥15	≥30	HBW: ≤321 or HRC: ≤35
25＜d≤32	Carbide Solid Solution Treatment with Strain Hardening	≥725	≥450	≥20	≥35	HBW: ≤321 or HRC: ≤35
32＜d≤40	Carbide Solid Solution Treatment with Strain Hardening	≥690	≥345	≥28	≥45	HBW: ≤321 or HRC: ≤35

Approximate Comparison Table Austenitic Stainless Steel

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

A320B8FClass2 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"!