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Chrome Moly P11

Penn Stainless offers Chrome Moly P11 in welded large diameter pipe.

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General Properties

Chrome Moly P11 stainless is highly resistant to cracking from hydrogen attack, as well as hot sulfide corrosion cracking. Chrome Moly P11 has a better overall strength to weight ratio than steel, which allows for reduced weight and thinner walls in Chrome Moly products. This grade of steel has strong resistance to rupturing and high pressures and/or temperatures, and is designed for high temperature and pressure services.  Chrome Moly P11 is used in the power generation industry, petro-chemical industry, petroleum industry, and in high temperature applications due to its tensile strength, corrosion resistance and high-temperature strength.

Common Applications

  • Petroleum, petro-chemical refinery process, power generation, high temp




  • Resistant to hot sulfide corrosion cracking
  • Strong resistance to rupturing at high temperatures and high pressures


  • Chrome moly P11 shows good weldability

Heat Treatment

  • Can be used for NACE Applications where sour environments are under high temp and pressure
  • Ideal for creep rupture applications
  • Can handle high temperatures with very low elasticity

Chemical Properties:

Element Composition
Carbon 0.10-0.20
Manganese 0.30-0.80
Chromium 1.00-1.50
Molybdenum 0.44-0.65

Physical Properties:

Grade Tensile Strength (k.s.i.) Yield Strength (k.s.i.) 0.2% offset Elongation %




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