AISI 4140 Alloy Steel

steel-4140

AISI 4140 Alloy Steel

carbon-steel

AISI 4140

{
  "density": {
    "value": 7850,
    "unit": "kg/m³"
  },
  "tensileStrengthYield": {
    "value": 655,
    "unit": "MPa"
  },
  "tensileStrengthUltimate": {
    "value": 1020,
    "unit": "MPa"
  },
  "elasticModulus": {
    "value": 205,
    "unit": "GPa"
  },
  "shearModulus": {
    "value": 80,
    "unit": "GPa"
  },
  "poissonsRatio": 0.29,
  "thermalConductivity": {
    "value": 42.6,
    "unit": "W/(m·K)"
  },
  "thermalExpansion": {
    "value": 12.3,
    "unit": "µm/(m·K)"
  },
  "specificHeat": {
    "value": 473,
    "unit": "J/(kg·K)"
  },
  "meltingPoint": {
    "value": 1416,
    "unit": "°C"
  },
  "hardness": {
    "brinell": 302,
    "rockwellC": "C32"
  }
}

Gears, Shafts, Spindles, Fixtures, Tooling, Crankshafts

Chrome-moly alloy. High strength when heat treated. Good fatigue resistance.