C3-80 Introduction
C3-80 refers to the martensitic stainless steel 1Cr17Ni2 or 2Cr17Ni2, with a tensile force of 800 N/mm2.
1Cr17Ni2 series is a kind of steel with better strength and toughness among martensitic stainless steels. It has good corrosion resistance to oxidizing acids, most organic acids and aqueous solutions of organic salts. It is generally suitable for the production of nitric acid and acetic acid, as well as for shafts, piston rods, pumps and other parts that require both toughness and corrosion resistance in light industry, textile and other industries. Its properties are as follows:
1. Chemical composition:
Carbon C: 0.11 to 0.17
Silicon Si: ≤0.80
Manganese Mn: ≤0.80
1Cr17Ni2 martensitic stainless steel
Sulfur S: ≤0.030
Phosphorus P: ≤0.035
Chromium Cr: 16.00～18.00
Nickel Ni: 1.50～2.50
2. Mechanical properties:
Hardness: Annealed, ≤285HB
Heat treatment specification and metallographic structure
Heat treatment specifications: 1) annealing, high temperature tempering at 680~700℃ and air cooling; 2) quenching, oil cooling at 950~1050℃; 3) tempering at 275~350℃ and air cooling.
Metallographic structure: The structure is characterized by martensitic type.
RAYCHIN's C3 series fastener products have been used in petrochemical, wind power, nuclear power, railway, aviation and other sectors for a long time.