PROPRIETARY 309 (R20-12) Stainless steels
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PROPRIETARY 309 (R20-12) Chemical Composition
Aperam, Product Data Sheets,
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PROPRIETARY 309 (R20-12) Physical Properties
Temperature
This material has 286 properties — only a subset is shown here.
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PROPRIETARY 309 (R20-12) Heat Treatments
- Annealing
After cold forming (work hardening) and after welding an annealing treatment for a couple of minutes at 1050 ± 25°C followed by air cooling water quenching, restores the microstructure (recrystallisation and dissolution of carbides) and eliminates internal stresses.
Pickling
Nitric-Hydrofluoric acid mixture (10%HNO3 + 2% HF) at ambient temperature or up to 60°C.
Sulfuric-nitric acid mixture (10% H2SO4 + 0.5%NHO3) at 60°C
Descaling pastes for weld areas.
Passivation
- 20-25% HNO3 solution (36° Baumé) at 20°C.
- Passivating pastes for weld zones.
PROPRIETARY 309 (R20-12) Mechanical Properties
Temperature
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PROPRIETARY 309 (R20-12) International Equivalent Materials
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Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.
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- 74Cross References
- 5Composition
- 53Mechanical Properties
- 77Physical Properties
- 1Heat Treatment
- -Metallography
- -Machinability
- 17Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 59Total Suppliers