ASTM A320 Grade B8FA Stud Bolts

303S31, BS2346, 1.4305, 303, S30300, X8CRNIS18-9

A320 Grade B8FA Stud Bolts are manufactured from 303 Stainless Steel in accordance with A320 specification. Torqbolt is a prominent A320 gr B8FA stud bolt supplier in India.

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ASTM A320 Grade B8FA Stud Bolts Properties

ASTM A320 Grade B8FA Stud Bolts Chemical Requirements

Austenitic Steels

Grade Symbol	UNS Designation		C, max	Mn, max	P, max	S, max	Si, max	Ni	Cr	Mo	Se	Ti	N	Nb E + Ta
ASTM A320 B8FA	S30300(303)	Range,%	0.15	2.00	0.20	00.15, min	1.00	8.0 - 10.0	17.0- 19.0	...	...	...	...	...
	S30300(303)	Product Variation, % Over or Under	0.01 over	0.04 over	0.010 over	0.20	0.05 over	0.10	0.20	...	...	...	...	...
	S30300(303)	Range,%	0.01 over	0.04 over	0.010 over	0.02	0.05 over	0.1	0.2	. . .	. . .	. . .	...	...
	S30300(303)	Product Variation, % Over or Under	0.15	2	0.2	0.06, max	1	8.0-10.0	17.0-19.0	. . .	0.15-0.35	. . .	...	...

ASTM A320 Grade B8FA Stud Bolts Mechanical Requirements

Austenitic Steels

Grade and Class	Diameter, in. [mm]	Heat Treatment	Minimum Tempering Temperature, °F [°C]	Tensile Strength, min, ksi [MPa]	Yield Strength, min, ksi [MPa] (0.2 % offset)	Elongation in 2 in. or 50 mm, min, %	Reduction of Area, min, %	Hardness, max
ASTM A320 B8FA Class 1A	All diameters	carbide solution treated in the finished condition	...	75 [515]	30 [205]	30	50	192 HBW or 90 HRB

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