Resitant Metal Alloys Fasteners is a reputed name among High Tensile Alloy Steel Fasteners manufacturers and suppliers. Alloy steel Resitant Metal Alloys offers complete range of alloy steel bolts, screws, stud bolts, threaded rods, nuts and washers. Alloy steel grades 4130, 4140, 4340 and 8620 (20MnCr5) are commonly used material for producing these high strength alloy steel fasteners.

Alloy steel fasteners are supplied in quenched and tempered condition with charpy impact testing and are primarily used for low temperature bolting applications. ASTM A193 Grade B7, B7M, A320 L7, L7M, L43, ISO 898-1 Grade 8.8, 10.9 & 12.9 are among frequently manufactured alloy steel bolt grades.

Alloy Steel Fasteners

Alloy Steel Grade Chart

AISI Grades	SAE Grades	British	European Name	Werkstoff Number
AISI 4130	SAE 4130	...	25CrMo4	1.7218
AISI 4140	SAE 4140	EN 19	42CrMo4	1.7225
AISI 4340	SAE 4340	EN 24	36CrNiMo4	1.6511
AISI 6150	SAE 6150	...	51CrV4	1.8159
AISI 8620	SAE 8620	...	21NiCrMo2	1.6523

Specifications