High Strength Duplex Stainless SteelUNS S32900/UNS S17400/UNS S32760 Steel Bar Forging Bright Round Bar.

High strength duplex stainless steelUNS S32900/UNS S17400/UNS S32760 steel bar forging bright round bar.

Material Introduction:

1.S32900 is a duplex stainless steel known for its excellent corrosion resistance, high strength, and good processability. S32900 is a corrosion-resistant stainless steel material, also known as 1.4460 stainless steel. It is an austenitic stainless steel with excellent corrosion resistance and strength. S32900 material is widely used in many industrial fields, especially in the marine and chemical industries.​

The chemical composition of S32900 mainly includes chromium (Cr), nickel (Ni), molybdenum (Mo), manganese (Mn), silicon (Si), phosphorus (P), sulfur (S), and nitrogen (N), as well as a small amount of carbon (C). Specifically, the chemical composition and range of S32900 are as follows:

Chromium (Cr): 23.0-28.0%
Nickel (Ni): 2.0-5.0%
Molybdenum (Mo): 1.0-2.0%
Manganese (Mn): ≤ 1.50%
Silicon (Si): ≤ 1.00%
Phosphorus (P): ≤ 0.035%
Sulfur (S): ≤ 0.030%
Carbon (C): ≤ 0.08%

These components endow S32900 with excellent corrosion resistance, especially in marine environments, chemical industries, and petrochemical industries that require high corrosion resistance. The high chromium content of S32900 provides excellent corrosion resistance and exhibits good stress corrosion resistance in aqueous media containing chlorides. In addition, S32900 also has good resistance to pitting and crevice corrosion, as well as good oxidation resistance

2.UNS S17400 is a precipitation hardening stainless steel, also known as 17-4PH. ‌

UNS S17400 alloy is a high-strength and high hardness martensitic precipitation hardened stainless steel, which has added copper (Cu), niobium (Nb), and tantalum (Ta). This material combines high strength and hardness values with moderate corrosion resistance, possessing excellent strength and toughness, and excellent corrosion resistance after heat treatment.

The chemical composition of S17400 stainless steel mainly includes:

Carbon (C): 0.04-0.06%,
Chromium (Cr): 15.5-17.5%,
Nickel (Ni): 3.0-5.0%,
Copper (Cu): 3.0-5.0%,
Niobium (Nb): 0.15-0.45%. ‌

S17400 stainless steel, also known as 17-4PH or 630 stainless steel, is a high-strength precipitation hardening martensitic stainless steel. It achieves excellent strength and hardness while maintaining good corrosion resistance through precipitation hardening treatment by adding elements such as copper and niobium. This stainless steel has good welding performance and can be welded through various welding methods to achieve welding connections, simplify manufacturing processes, and reduce production costs. The sealing performance of S17400 is good, suitable for sealing components under special working conditions such as high pressure, high temperature, and high corrosion. In addition, S17400 stainless steel is widely used in industries such as chemical, petroleum, and pharmaceutical industries that require high corrosion resistance, and has demonstrated extraordinary potential in the fields of aerospace and marine engineering

3.S32760 is a high-performance super duplex stainless steel material with high strength and corrosion resistance. ‌

S32760 stainless steel, also known as super duplex steel, is a high alloy material mainly used in various strong corrosive environments. Its tensile strength ranges from 750 to 895 MPa, yield strength is greater than 550 MPa, and elongation is greater than 25%, demonstrating excellent mechanical properties. The chemical composition of this material includes elements such as carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, molybdenum, tungsten, copper, and nitrogen. Among them, the high content of chromium and nickel endows it with strong oxide film protection, while the added elements such as molybdenum and nitrogen further enhance its corrosion resistance in wear, erosion, and other aspects.

The chemical composition of S32760 mainly includes carbon, silicon, manganese, phosphorus, sulfur, nickel, chromium, molybdenum, nitrogen, and copper. ‌‌

Carbon (C): 0.030% -0.03%
Silicon (Si): 1.00%
Manganese (Mn): 1.00%
Phosphorus (P): 0.030%
Sulfur (S): 0.010%
Nickel (Ni): 6.0% -8.0%
Chromium (Cr): 24% -26%
Molybdenum (Mo): 3.0% -4.0%
Nitrogen (N): 0.20% -0.30%
Copper (Cu): 0.50% -1.00%
These components endow S32760 with high strength and excellent corrosion resistance, making it particularly suitable for fields such as chemical processing, petrochemicals, and subsea equipment. The tensile strength range of S32760 is 750~895 MPa, the yield strength is greater than 550 MPa, and the elongation is greater than 25%. These mechanical performance indicators ensure its reliability and durability under extreme conditions.