STAINLESS STEEL STUD BOLT MATERIAL GRADE

Stainless steel stud bolts are used in a wide range of applications, thanks to their corrosion resistance, strength, and durability. The material used for manufacturing stud bolts plays a crucial role in ensuring the bolts perform well in demanding environments.

We are the professional Manufacturer and exporter of stainless steel bolts and nuts in China.

Size and Material grade available as below

Fastener Type	Diameter	Grades	Grades	Grades	Grades
Hexagon bolts	M-12 to M-100	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431
Hex bolts	M-12 to M-100	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431
Hex cap screws	M-12 to M-100	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431
Socket head cap screws	M-30 to M-72	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431
Hex nuts	M-30 to M-72	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431
Hex lock nuts	M-30 to M-72	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431
Hex nylock nuts	M-30 to M-64	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431
Hex castle nuts	M-12 to M-72	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431
Heavy hex nuts	M-12 to M-72	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431
Washers	M-12 to M-72	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431
Stud bolts	M-12 to M-72	304 / 304 L	316 / 316 L	310 / 310 S	410 / 431

Comparison chart for international steel grades for stainless steel bolting

Grades	European Number	ASTM grade	UNS	British standard	DIN
304	1.4301	ASTM A 193 Gr B8	S 30400	BS 970	X 5CrNi1810
304 L	1.4306	ASTM A 320 Ge B8	S 30403	BS 970	X 2CrNi1911
316	1.4401	ASTM A 193 Gr B8M	S 31600	BS 970	X 5 CrNiMo 17 13 2
316 L	1.4404	ASTM A 320 Gr B8M	S 31603	BS 970	X 2 CrNiMo 17 13 2
310	1.4841	ASTM A 479	S 31000	BS 970	X 12 CrNi 25 21
310 S	1.4845		S 31008	BS 970	X 12 CrNi 25 21
410	1.4006		S 41000	BS 970	X 10Cr13
431	1.4057		S 43100	BS 970	X 20CrNi172
316S31	1.4401	ASTM A 193 Gr B8M	S 31600	BS 970	X 5 CrNiMo 17 12 2

Here is a detailed overview of the most common stainless steel grades used for stud bolts:

1. Austenitic Stainless Steel Grades

Austenitic stainless steels are non-magnetic and offer high corrosion resistance. They are generally the most widely used stainless steel alloys for fasteners and stud bolts, including both 304 and 316 grades.

a. ASTM A193 Grade B8 (Type 304)

b. ASTM A193 Grade B8M (Type 316)

2. Duplex Stainless Steel Grades

a. UNS S32750 (Super Duplex Stainless Steel) F53/2507

b.UNS S32760 (Super Duplex Stainless Steel)

3. Ferritic Stainless Steel Grades

Ferritic stainless steels are magnetic and contain less nickel than austenitic types. They offer good resistance to stress corrosion cracking and are cost-effective compared to austenitic grades.