AISI 418

AISI 418

Stainless steel grade 418 is martensitic type of steel that has good corrosion resistance, high harness, toughness and strength.

Chemical Composition


Element Content(%)
Iron, Fe 82
Chromium, Cr 13
Tungsten, W 3
Nickel, Ni 2

Mechanical Properties


Properties Metric Imperial
Tensile strength 895 MPa 130000 psi
Yield strength (@strain 0.200 %) 725 MPa 105000 psi
Modulus of elasticity 190-210 GPa 27557- 30457 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30
Elongation at break 15% 15%
Hardness, Rockwell C 25 25

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 418 Equivalent Grade / Specifications

  • SAE 51418

AISI 418 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.