WHAT IS 4130 STEEL EQUIVALENT TO?

 4130 steel, otherwise known as chromium molybdenum steel alloy, is made with 0.8 to 1.1% chromium and 0.15 to 0.25% molybdenum as strengthening agents.Its steel properties make it a versatile metal, especially mechanical properties such as high ductility, good weld-ability, and machi-nability.

Equivalent standards of 4130 steel include ASTM A1031 Grade 4130, DIN 1.7214,  25CrMo4, BS 25CrMo4, EN 1.7214, and UNS G41300.

APPLICATIONS OF CHROMOLY (4130 STEEL)

4130 steel rods and tubes are very popular with high strength and great weldability. That's why they are widely used for:

4130 STEEL PROPERTIES

Here are the values for some of the main properties of Chromoly:

  • Density – 7.85 g/cm3
  • Hardness – 217 (Brinell scale) – 95 (Rockwell B)
  • Ultimate Tensile Strength – 540 MPa
  • Yield Tensile Strength – 460 MPa
  • Modulus of Elasticity – 205 GPa
  • Machinability – 72% (in annealed state)

HEAT TREATMENT OF 4130 STEEL

The reason for heat treatment is to prepare the alloy for machining and to enhance 4130 steel properties. There are four main ways to heat treat steel alloy: annealing, normalising, induction hardening, and tempering.

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