The UNS designation of AISI 4820 is G48200, and AISI 4820 Alloy Steel is nickel-molybdenum steel, which can be manufactured at annealing, quenched, tempered conditions, of course , some other delivery conditions is also available.
AISI 4820 alloy steel chemical composition
Iron, 94.645-95.72
Nickel, 3.25-3.75
Manganese, 0.500-0.700
Molybdenum, 0.200-0.300
Carbon, 0.180-0.230
Silicon, 0.150-0.300
Sulfur, ≤ 0.0400
Phosphorous, ≤ 0.0350
AISI 4820 alloy steel properties
Density 7.85 g/cm3
Tensile strength 685 MPa
Yield strength 460 MPa
Elastic modulus 190-210 GPa
Bulk modulus (typical for steel) 140 GPa
Shear modulus (typical for steel) 80 GPa
Poisson’s ratio 0.27-0.30
Izod Impact 94 J
Hardness, Brinell 197
Hardness, Knoop (converted from Brinell hardness) 219
Hardness, Rockwell B (converted from Brinell hardness) 92
Hardness, Rockwell C (converted from Brinell hardness, value below normal HRC range, for comparison purposes only) 13
Hardness, Vickers (converted from Brinell hardness) 207
Machinability (annealed and cold drawn, based on 100 machinability for AISI 1212 steel) 50
Corresponding steel grades to AISI 4820
ASTM A29 SAE J1397
ASTM A322 SAE J404
ASTM A331 SAE J412
ASTM A519 ASTM A505
ASTM A535 SAE J770
All the grades above are available in Bebon steel, so are the standard sizes, special sizes, you per required sizes of AISI 4820 alloy steel. Call today for AISI 4820 alloy steel freely.
