AISI 4615

AISI 4615

Alloy steel is often subdivided into low alloy steel and high alloy steels. Low alloy steels exhibit mechanical properties superior to plain carbon steels due to the addition of alloying elements such as molybdenum, nickel and chromium. High alloy steels, on the other hand exhibit high strength at elevated temperatures, and hence they are used in applications involving aggressive environments to which the steel must be resistant. AISI 4615 is a nickel-molybdenum steel.

Chemical Composition


Element Content(%)
Iron, Fe 96.495 - 97.42
Nickel, Ni 1.65 - 2
Manganese, Mn 0.45 - 0.65
Molybdenum, Mo 0.20 - 0.30
Silicon, Si 0.15 - 0.30
Carbon, C 0.13 - 0.18
Sulfur, S ≤0.040
Phosphorous, P ≤0.035

Mechanical Properties


Properties Metric Imperial
Modulus of elasticity 205 GPa 29700 ksi
Bulk modulus 140 GPa 20300 ksi
Shear modulus 80 GPa 11600 ksi
Poisson’s ratio 0.29 0.29
Hardness, Brinell 170 - 212 170 - 212
Hardness, Vickers 200 200
Hardness, Knoop 213 213
Hardness, Rockwell C 11 11
Hardness, Rockwell B 91 91
Machinability 65% 65%

Sheets / Plates

Production Route Hot Rolled, Cold Rolled
Material Standard AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, IS & Custom Chemistry
Size Width from 100mm to 3000mm ; Length from 500mm to 12000mm
Thickness 0.1mm to 400mm
Delivery Condition As Rolled, Annealed, Quenched and Tempered, Normalized
Surface Finish Plain, Brushed, Cladded

AISI 4615 Equivalent Grade / Specifications

  • AMS 6290
  • AMS 6290C
  • ASTM A322
  • ASTM A331
  • ASTM A505
  • MIL SPEC MIL-S-7493
  • SAE J404
  • SAE J412
  • SAE J770

AISI 4615 Applications

  1. Structures in Buildings, bridges, railway stations
  2. Fabrication of pipeline components & Industrial equipment
  3. Construction of automotive bodies, warehouses, shipping containers
  4. Commercial appliances, etc.