022Cr25Ni6Mo2N is duplex stainless steel, often related to grades such as S31050. The composition and properties of this alloy make it suitable for applications requiring high strength and excellent corrosion resistance.
022Cr25Ni6Mo2N Duplex Stainless Steel Data Sheet
022Cr25Ni6Mo2N Indicates the Brand
National Standard GB-T standard: Digital grade: S 22553, new grade: 022Cr25Ni6Mo2N,
US Standard: ASTMA standard: S31200, SAE standard: 1, UNS standard: 44LN,
German Standard DIN standard: 1.4460,
European Standard EN standard: X3CrNiMON27-5-2.
Chemical Composition of 022Cr25Ni6Mo2N
| C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| ≤0.030 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.030 | 24.00 ~ 26.00 | 5.50 ~ 6.50 | 1.20~2.50 | 0.10~0.20 |
Physical Properties of 022Cr25Ni6Mo2N
① Density (20℃)/kg/dm3:7.8,
② Melting point /℃: -,
③ Specific heat capacity (0~100℃)/kg/(kg.k):0.5,
④ Thermal conductivity /w/(m.k)100℃-:21,
⑤ Thermal conductivity /w/(m.k)500℃-:25,
⑥Linear expansion coefficient /(10-6/k)0~100℃:13.4,
⑦ Linear expansion coefficient /(10-6/k)0~564℃:24,
⑧ Resistivity (20℃)/(.mm2/m):-,
⑨ Longitudinal elastic modulus (20℃) /GPa:196,
⑩ Magnetic: Yes.
Mechanical Properties of 022Cr25Ni6Mo2N
⑴ Delivery status: bar solid solution treatment, plate solid solution pickling,
⑵ Tensile strength (RM/MPa): 640,
⑶ Elongation strength (Rp0.2/MPa) : 450,
⑷ Elongation A/% : 25,
022Cr25Ni6Mo2N Heat Treatment
① Hardness HBW≤ : solid solution 227, hardness HRB≤ : 29,
② heating temperature: 950~1100,
③ Heating method: fast cooling.
Application Areas of 022Cr25Ni6Mo2N
Mainly used in chemical, chemical fertilizer, petrochemical, and other industrial fields, the main production of heat exchangers, evaporators and so on.
What Kind of Stainless Steel is 00Cr25Ni6Mo2CuN?
Grade 00Cr25Ni7Mo4WCuN Super Duplex Stainless Steel
National standard: 00Cr25Ni7Mo3.5WCuN super duplex stainless steel has high strength and strong corrosion resistance, mainly used in chemical processing, petrochemical, and submarine equipment.
S32760 (F55/Zeron 100/1.4501) Super duplex stainless steel has strong resistance to chloride corrosion, high thermal conductivity, and low coefficient of thermal expansion. With high chromium, molybdenum, and nitrogen content, it has a high resistance to spot corrosion, crack corrosion, and general corrosion ability.
Chemical Composition
| C | Si | W | Mn | P | S | Cr | Ni | Mo | N | Co | Others |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.03 | ≤1.0 | 0.5-1.0 | ≤1.0 | ≤0.03 | ≤0.01 | 24-26 | 6.0-8.0 | 3.0-4.0 | 0.2-0.3 | 0.5-1.0 | Cr+3.3Mo+16N≥40 |
Application Scope Application Domain
Oil and gas industry equipment. Offshore platforms, heat exchangers, underwater equipment, fire fighting equipment. Chemical processing industry, utensils, and pipes industry. Desalination plants, high-pressure RO plants, and submarine pipelines? Mechanical parts (high-strength, corrosion-resistant parts)
What Material Is 03Cr25Ni6Mo3Cu2N
03Cr25Ni6Mo3Cu2N(S25554) belongs to the national standard duplex stainless steel, the implementation standard: GB /T 20878-2007, this material has high hardness, good tensile plasticity, and satisfactory impact toughness, widely used in oxidation and reduction of strong acid working conditions, in the chlorine environment has a special resistance to stress corrosion cracking performance.
03Cr25Ni6Mo3Cu2N steel has good mechanical properties and local corrosion resistance, especially wear resistance is better than the general austenitic stainless steel and is an ideal material in seawater. 03Cr25Ni6Mo3Cu2N steel is suitable for the manufacture of screw propellers for ships, shafts, submarine seals, etc., and is also suitable for chemical, petrochemical, natural gas, pulp, paper, and other fields, with a wide range of applications.
Material Standards
China 03Cr25Ni6Mo3Cu2N
British UNS S32550
Japanese JIS SUS329J2L
ASTM 255/S32550
International ISO X2CrNImocUN 25-6-3
European EN X2CrNiMoCuN25-6-3/1.4507
Mechanical Properties
Tensile strength: 760MPa
Yield strength: 550 min MPa
Elongation: 25 min%
Hardness: 220-270 HB
Heat Treatment
The solution temperature is 950~1120℃, water cooling, hardness ≤290HBW; The aging temperature is 500~510℃.
Processing and Welding
03Cr25Ni6Mo2Cu2N steel can be sheared, stamped, molded, etc. At the beginning of cold pressing, it is necessary to apply 2 to 3 times the pressure than austenitic stainless steel to deformation. If heated to 200℃, the yield strength of steel can be reduced by 25%, which is conducive to the formation of steel and can reduce spring back.
Weldability and Corrosion Resistance
The welding process is similar to the welding of austenitic stainless steel, and no heat treatment is required after welding.
In a chlorine-containing environment, the pitting resistance of 03Cr25Ni6Mo3Cu2N steel is better than 18-5Mo type duplex stainless steel and is better than 022Cr17Ni12Mo2(00Cr17Ni12Mo2) steel, which is an ideal material in the seawater environment.