DIN 1.7380 10CrMo9-10 ASTM A182 F22 Stainless Steel for High Temperature Service
1.7380 10CrMo9-10 ASTM A182 F22 Stainless Steel for High Temperatur
1 1.7380 Application
1.7380 F22 stainless steel is a low alloy steel containing nominally 2.25% Chromium. This F22 stainless steel is widely used in the oil patch wellhead applications for connectors, hangers and block valves. Hardness levels up to 22 HRC are approved to NACE MR0175. The grade is often used as the base metal for clad components. If supplied to ASTM A182 in the normalised and tempered condition, the 0.2% Proof Stress minimum is 30 KSI.
2 All Grades Comparison
| Material no. | DIN | ASTM |
|---|---|---|
| 1.7380 | 10CrMo9-10 | F22 |
3 Quality Standard
ASTM A182 Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
4 1.7380 Chemical Composition(%)
| C | Mn | Si | P | S | Cr | Mo |
|---|---|---|---|---|---|---|
| 0.05-0.15 | 0.30-0.60 | 0.50 max | 0.040 max | 0.040 max | 2.00-2.50 | 0.87-1.13 |
Smelting Option
1 EAF: Electric Arc Furnace
2 EAF+LF+VD: Refined-smelting and vacuum degassing
3 EAF+ESR: Electro Slag Remelting
4 EAF+PESR: protective atmosphere Electro Slag Remelting
5 VIM+PESR: Vacuum induction melting
Forming Option
1 Hot rolling process
2 Hot Forging: Electro-hydraulic; High-speed-hydraulic; Oil-hydraulic; Precision-forging
Heat-treatment Option
1 +A: Annealed (full/soft/spheroidizing)
2 +N: Normalized
3 +NT: Normalized and tempered
4 +QT: Quenched and tempered (water/oil)
5 +AT: Solution annealed
6 +P: Precipitation hardened
Suface Option
1 Black Surface
2 Grounded: Bright but rough ; Not precision
3 Machining for plate: Bright and precision; Little turning scar
4 Peeled/Turned: Bright and precision; Little turning scar
5 Polished: Very Bright and precision size; Not turning scar
Other Services
1 Cutting: Small pieces
2 CNC Machine: Produce as your drawing
3 Package: Bare/Nylon/Canvas/Wooden
4 Payment:T/T, L/C, O/A(request credit)
5 Transport:FOB/CFR/CIF/DDU/DDP (train/ship/Air)
5 Mechanical Properties(T=20°C)
| Delivery Condition | Tensile Strength Rm (Mpa) | Yield Strength Rp0.2 (Mpa) | Elongation(%) | Reduction Ratio(%) | Hardness (HB) |
|---|---|---|---|---|---|
| Normalized and Tempered | 900 min | 675 min | / | / | / |
| Slow Cooling | 415 min | 205 min | 20 min | 35 min | 170 max |
6 1.7380 HEAT TREATMENT
Normalizing: Temperature: 920°-980°C.
Stress Relieving: Stree relieving to remove maching stresses should be carried out by heating to 675°C, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Austenization: Temperature:920°-980°C
Tempering: Tempering temperature: 650°-750°C
Forging: Hot forming temperature: 850°-1050°C
