Ningbo Huali Steel Co., Ltd is a professional manufacturer of SUS631 Precipitation Hardening Stainless Steel Coil in China. We are deeply engaged in precision stainless steel coils/strips/foils/sheets for two decades, including 304, 301, 321, 310s, 304L, 316L, 410s, 430, 904L. With competitive price and superior quality, our business has swiftly grown in key markets such as Europe, South America, the Middle East, and Southeast Asia, delivering outstanding results.
SUS631 precipitation hardening stainless steel coil is a high-performance semi-austenitic precipitation hardening stainless steel, also called 0Cr17Ni7Al or 17-7PH. It has high strength, high hardness, good corrosion resistance and fatigue resistance. The tensile strength after solution treatment is ≤1030MPa, the yield strength is ≤380MPa, and the hardness is ≤229HB. It shows good corrosion resistance in atmospheric corrosion, mild corrosion and acid solution, especially in oxidizing acid. In high temperature environment, the deformation of 17-7PH is very small. SUS631 precipitation hardening stainless steel coil is widely used in aerospace, medical equipment, automobile manufacturing and other fields to meet various complex and demanding application requirements.
| GRADE | Chemical Composition | |||||
| C | Si | Mn | P | S | Ni | |
| % | % | % | % | % | % | |
| 631 | ≤0.09 | ≤1.00 | ≤1.00 | ≤0.035 | ≤0.030 | 6.50/7.75 |
SUS631 precipitation hardening stainless steel coil is a high-performance semi-austenitic precipitation hardening stainless steel with high strength, high hardness, good corrosion resistance and fatigue resistance.
High strength and high hardness:
Heat 631 stainless steel to 1000~1100℃ and then cool it quickly. After solution treatment, 631 stainless steel has good toughness and is easy to cold deform or cold form.
Good fatigue resistance: Under repeated stress, 631 is not prone to fatigue damage and is suitable for parts that require long-term stable work.
Excellent corrosion resistance: 631 stainless steel shows good corrosion resistance in atmospheric corrosion, mild corrosion and acid solution, especially in oxidizing acid.
Good processing performance: 631 stainless steel can be formed by conventional mechanical processing.
SUS631 precipitation hardening stainless steel coil is widely used in aerospace, medical equipment, automobile manufacturing, marine engineering and other fields. It is used to manufacture parts that need to withstand high loads, be wear-resistant and corrosion-resistant, such as aircraft engine parts, surgical instruments, automobile chassis, etc.
Ningbo Huali Steel has introduced advanced machinery from abroad, equipping its production lines with first-rate manufacturing equipment.
The American imported twenty series Sendzimir high precision reversible mill is capable of speeds up to 650 m/min, and control overall tolerances are maintained to within ± 0. 002 mm.
Twenty-three rolls tension leveler with automatic online surface inspection, defects alarm, and remote defects record function to ensure accurate production process and instant record of status.
Used to clean oil and other stains from the surface of SUS631 precipitation hardening stainless steel coil to send them to the annealing furnace or factory.
Packing Option: Standard packaging, wooden box packaging, as well as customized packaging solutions.
Our dedicated loading team ensures meticulous handling of every pallet. Each container is securely reinforced with wood and wire rope to guarantee that your goods (SUS631 precipitation hardening stainless steel coil) arrive in safe condition.
Certificates: ISO9001, SGS, MTC and more.
