SUS630 Stainless Steel
High-Strength Corrosion-Resistant Pre-Hardened Stainless Steel
Properties:
SUS630 is a Japanese steel grade. SUS630 martensitic stainless steel is characterized by high hardness, high strength, and corrosion resistance. Particularly, it is a precipitation-hardening martensitic stainless steel and is among the hardest of all types of stainless steel. After heat treatment, the mechanical properties of the steel are further improved, achieving a strength of 1100-1300 MPa. This grade should not be used at temperatures above 300°C or at very low temperatures. SUS630 exhibits good corrosion resistance to atmospheric conditions, diluted acids, or salts. Its corrosion resistance is comparable to that of grades 304 and 430. It is currently widely used in valves, shafts, and the chemical fiber industry for high-strength components requiring certain corrosion resistance.
Chemical Composition:
Magnetic Stainless Steel SUS630 Chemical Composition
C 0.06 Si 1.0 Mn 1.0
Cr 16.5 Ni 4.2 Cu 4.0
Nb+Ta 0.25
Mechanical Properties:
Mechanical Properties | 480°C Aging | 550°C Aging | 580°C Aging | 620°C Aging |
Tensile Strength (MPa) | 1310 | 1060 | 1000 | 930 |
Yield Strength (MPa) | 1180 | 1000 | 865 | 725 |
Elongation (%) | 10 | 12 | 13 | 16 |
Reduction of Area (%) | 40 | 45 | 45 | 50 |
Hardness (HRC) | 40 | 35 | 31 | 28 |
Applications:
1.SUS630 stainless steel plates are suitable for manufacturing plastic and rubber molds requiring high corrosion resistance and wear resistance;
2.SUS630 stainless steel material is suitable for manufacturing plastic molds for semiconductor IC encapsulation and mold components requiring corrosion and rust resistance;
3.SUS630 stainless steel round bars are suitable for turbine blades, nozzles, valves, ruler blades, high-corrosion-resistant bearing parts, and high-wear-resistant equipment components;
4.SUS630 stainless steel material is suitable for manufacturing high-corrosion-resistant mold equipment in the food industry, offshore platforms, etc.
Due to its excellent mechanical properties and corrosion resistance, SUS630 is also widely used in petrochemicals, nuclear power, aerospace and military industries, shipbuilding, automotive, medical, and other sectors.
Supply Condition and Delivery Hardness:
SUS630 stainless steel bars/plates/round steel/round bars/steel materials/modules are supplied in a pre-hardened condition, with a delivery hardness of approximately 37-41 HBW.
Heat Treatment Process:
