403Cb, 410Cb, B50A790, XM-30, UNS S41040

November 27, 2022 | Tags: 403Cb, B50A790, XM-30, S41040, B50A947B, B50A947, 410Cb,
403Cb, 410Cb
403Cb, 410Cb

403Cb, 410Cb is a Low-Carbon AOD + ESR Melting Martensitic Stainless Steels for Turbine Blades, this alloy has higher strength and toughness acc. to GE B50A947, ASTM A276 , A479, GE B50A790, DOD-F-24669, Dresser Rand CM-8782, GE B50A947B

What is 403Cb, 410Cb grade steel?

403Cb, 410Cb is a martensitic stainless steel, this alloy has higher strength and toughness, the addition of columbium can improve grain size control and make it easier to heat treat, mainly used in electrical energy.

Chemical Composition

GradeChemical composition WT %
403Cb, B50A9470.06-

Mechanical Properties

403Cb Mechanical properties acc. to B50A947

  • Tensile strength Rm MPa: Min 760
  • Yield Strength Rp MPa: Min 555
  • Elong In2 inches %: min 15
  • RA %: min 15
  • Brinell Hardness, 3000Kg Load %: 223-269
  • V-Notch Charpy Min. Energy at R.T. ft-lbs(J): min 25(33.9)

Welding Properties

Good welding property

Machining Properties

Good machining property

Our provides:

Round Bars

Hot rolled coils & plates

Cold rolled coils and sheets


Flat bars

Hollow bars

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