Introduction
00Cr17 is a kind of martensitic stainless steel. Architecturally, martensitic stainless steel is a solid solution and consists of carbon, chromium and ferrite. They can be magnetized and are highly resistant to corrosion. 00Cr17 is a typical low carbon martensite stainless steel, which is designed to optimize optimum balance between strength and ductility. Its excellent weldability makes it highly suitable for various engineering applications, including, but not limited to, valves, pumps and other parts of pipeline equipment.
Chemical Composition
00Cr17 is a martensitic stainless steel with excellent corrosion resistance, weldability and mechanical properties. The chemical composition of 00Cr17 is as follows:
C : 0.08 – 0.10 %
Si : 0.5 % max
Mn : 0.5 % max
P : 0.040 % max
S : 0.03 % max
Cr : 16.5 – 17.5 %
Ni : 0.3 % max
Mo : 0.3 % max
Cu : 0.3 % max
N : 0.1 % max
Physical Properties
The physical properties of 00Cr17 steel are as follows:
Density: 7.8 g/cm3
Melting point : 1390–1450 °C
Yield strength (annealed): 310 MPa
Tensile strength: 550–720 MPa
Elongation at break : 35–50 %
Hardness (HBW): 270–324
Machinability: 30–50 %
Applications
00Cr17 is typically used for valves, pumps and other parts of pipeline equipment. It is also used for medical instrument components, marine parts and components, cutting tools, hinges and collets. Besides, it can be used for making fan blades, kitchen cutlery and other specialized objects.
Welding
00Cr17 can be welded using filler metals of similar composition and matching strength. However, welding of 00Cr17 stainless steel can be tricky. Preheating and post-weld heat treatments are recommended to avoid inter-granular corrosion and weld cracking. It is also important to use proper techniques and welding parameters. Generally, TIG and MIG welding techniques are the best for welding 00Cr17 stainless steel.
Heat Treatment
Typically, 00Cr17 can be heat treated by annealing, stress relieving, normalizing or quenching and tempering processes. The annealing process involves heating the steel to a temperature between 760 and 830°C and cooling it slowly. This process increases the ductility and machinability of the steel. Stress relieving reduces the natural stresses caused by welding. Normalizing involves cooling the steel in air to reduce its hardness. Quenching and tempering is used to improve the strength and toughness of the steel.
Conclusion
00Cr17 is a low carbon martensite stainless steel with excellent corrosion resistance, weldability and mechanical properties. It is designed to optimize an optimum balance between strength and ductility. Its excellent weldability makes it highly suitable for various engineering applications. The chemical composition of 00Cr17 is C: 0.08 – 0.10%, Si: 0.5% max, Mn: 0.5% max, P: 0.040% max, S: 0.03% max, Cr: 16.5 – 17.5%, Ni: 0.3% max, Mo: 0.3% max, Cu: 0.3% max and N: 0.1% max. The physical properties of 00Cr17 include density of 7.8 g/cm3, melting point of 1390–1450°C. Yield strength (annealed) of 310 MPa and tensile strength of 550–720 MPa. Typical applications of 00Cr17 include valves, pumps, medical instrument components, marine parts and components, cutting tools, fan blades, kitchen cutlery and other specialized objects. Welding of 00Cr17 can be tricky and preheating and post-weld heat treatments are recommended. 00Cr17 can be heat treated by annealing, stress relieving, normalizing or quenching and tempering processes.
