SUS630 stainless steel
Outline
SUS630 is a martensitic precipitation hardening stainless steel. High strength, high hardness, good weldability and corrosion resistance. Has been widely used in the promotion of the valve, shaft and chemical fiber industry, and has a high strength corrosion requirements of parts.
Feature
By the copper, niobium / columbium constitute the precipitation hardening martensitic stainless steel, low carbon content, corrosion resistance and weldability of martensitic stainless steel than normal number, similar in 18-8 stainless steel, heat treatment process is simple, cutting good, but the name is difficult to meet the deep, cold-type processing.
Microstructure: the organization is characterized by precipitation hardening.
Use
Used in the manufacture of high corrosion resistance, high strength parts, such as bearing type, turbine parts.
Physical properties
Chemical composition
Carbon C: ≤ 0.07
Si Si: ≤ 1.00
Manganese Mn: ≤ 1.00
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.035
Chromium Cr: 15.50 ~ 17.50
Ni-Ni: 3.00 ~ 5.00
Cu Cu: 3.00 ~ 5.00 Nb Nb: 0.15 ~ 0.45 [2]
Delivery status
Generally heat treatment delivery, the treatment types specified in the contract; not indicated, according to the heat treatment state of delivery.
SUS630 alloy is precipitation hardening, martensitic stainless steel, and this level has a high strength, hardness and corrosion resistance properties. After heat treatment, the mechanical properties of the product more complete, can reach up to 1100-1300 mpa (160-190 ksi) of compressive strength. This class can not be used above 300 ℃ (570F) or very low temperatures, dilute acid or its salt air and has good corrosion resistance, corrosion resistance and its 304 and 430 the same.
Mechanical properties
Tensile strength σb (MPa): 480 ℃ aging, ≥ 1310; 550 ℃ aging, ≥ 1060; 580 ℃ aging, ≥ 1000; 620 ℃ aging, ≥ 930
Conditions yield strength σ0.2 (MPa): 480 ℃ aging, ≥ 1180; 550 ℃ aging, ≥ 1000; 580 ℃ aging, ≥ 865; 620 ℃ aging, ≥ 725
Elongation δ5 (%): 480 ℃ aging, ≥ 10; 550 ℃ aging, ≥ 12; 580 ℃ aging, ≥ 13; 620 ℃ aging, ≥ 16
Reduction of area ψ (%): 480 ℃ aging, ≥ 40; 550 ℃ aging, ≥ 45; 580 ℃ aging, ≥ 45; 620 ℃ aging, ≥ 50
Hardness: solid solution, ≤ 363HB and ≤ 38HRC; 480 ℃ aging, ≥ 375HB and ≥ 40HRC; 550 ℃ aging, ≥ 331HB and ≥ 35HRC; 580 ℃ aging, ≥ 302HB and ≥ 31HRC; 620 ℃ aging, ≥ 277HB and ≥ 28HRC [3]
Heat treatment process
Heat treatment specifications:
1) solid solution 1020 ~ 1060 ℃ fast-cooling;
2) 480 ℃ aging, after solution treatment, 470 ~ 490 ℃ air-cooled;
3) 550 ℃ aging, after solution treatment, 540 ~ 560 ℃ air-cooled;
4) 580 ℃ aging, after solution treatment, 570 ~ 590 ℃ air-cooled;
5) 620 ℃ aging, after solution treatment, 610 ~ 630 ℃ air-cooled. Microstructure: the organization is characterized by precipitation hardening.
Outline
SUS630 is a martensitic precipitation hardening stainless steel. High strength, high hardness, good weldability and corrosion resistance. Has been widely used in the promotion of the valve, shaft and chemical fiber industry, and has a high strength corrosion requirements of parts.
Feature
By the copper, niobium / columbium constitute the precipitation hardening martensitic stainless steel, low carbon content, corrosion resistance and weldability of martensitic stainless steel than normal number, similar in 18-8 stainless steel, heat treatment process is simple, cutting good, but the name is difficult to meet the deep, cold-type processing.
Microstructure: the organization is characterized by precipitation hardening.
Use
Used in the manufacture of high corrosion resistance, high strength parts, such as bearing type, turbine parts.
Physical properties
Chemical composition
Carbon C: ≤ 0.07
Si Si: ≤ 1.00
Manganese Mn: ≤ 1.00
Sulfur S: ≤ 0.030
Phosphorus P: ≤ 0.035
Chromium Cr: 15.50 ~ 17.50
Ni-Ni: 3.00 ~ 5.00
Cu Cu: 3.00 ~ 5.00 Nb Nb: 0.15 ~ 0.45 [2]
Delivery status
Generally heat treatment delivery, the treatment types specified in the contract; not indicated, according to the heat treatment state of delivery.
SUS630 alloy is precipitation hardening, martensitic stainless steel, and this level has a high strength, hardness and corrosion resistance properties. After heat treatment, the mechanical properties of the product more complete, can reach up to 1100-1300 mpa (160-190 ksi) of compressive strength. This class can not be used above 300 ℃ (570F) or very low temperatures, dilute acid or its salt air and has good corrosion resistance, corrosion resistance and its 304 and 430 the same.
Mechanical properties
Tensile strength σb (MPa): 480 ℃ aging, ≥ 1310; 550 ℃ aging, ≥ 1060; 580 ℃ aging, ≥ 1000; 620 ℃ aging, ≥ 930
Conditions yield strength σ0.2 (MPa): 480 ℃ aging, ≥ 1180; 550 ℃ aging, ≥ 1000; 580 ℃ aging, ≥ 865; 620 ℃ aging, ≥ 725
Elongation δ5 (%): 480 ℃ aging, ≥ 10; 550 ℃ aging, ≥ 12; 580 ℃ aging, ≥ 13; 620 ℃ aging, ≥ 16
Reduction of area ψ (%): 480 ℃ aging, ≥ 40; 550 ℃ aging, ≥ 45; 580 ℃ aging, ≥ 45; 620 ℃ aging, ≥ 50
Hardness: solid solution, ≤ 363HB and ≤ 38HRC; 480 ℃ aging, ≥ 375HB and ≥ 40HRC; 550 ℃ aging, ≥ 331HB and ≥ 35HRC; 580 ℃ aging, ≥ 302HB and ≥ 31HRC; 620 ℃ aging, ≥ 277HB and ≥ 28HRC [3]
Heat treatment process
Heat treatment specifications:
1) solid solution 1020 ~ 1060 ℃ fast-cooling;
2) 480 ℃ aging, after solution treatment, 470 ~ 490 ℃ air-cooled;
3) 550 ℃ aging, after solution treatment, 540 ~ 560 ℃ air-cooled;
4) 580 ℃ aging, after solution treatment, 570 ~ 590 ℃ air-cooled;
5) 620 ℃ aging, after solution treatment, 610 ~ 630 ℃ air-cooled. Microstructure: the organization is characterized by precipitation hardening.
