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2205 Duplex Stainless Steel Forgings–Premium Quality From A Trusted Manufacturer
Introducing 2205 Duplex Stainless Steel Forgings, a flagship product from our expert China manufacturer. This duplex alloy blends austenitic and ferritic phases, delivering exceptional strength and corrosion resistance. Ideal for demanding environments, 2205 Duplex forged stainless steel excels in industries like oil and gas, chemical processing, and marine engineering. Our factory crafts these forgings with precision, ensuring durability and performance.
Price: Contact Us for a Custom Quote
Want pricing for 2205 Duplex Stainless Steel Forgings? Contact our sales team for a tailored quote. Costs depend on size, shape, and order volume—get yours today!
Specifications
Here’s what defines 2205 Duplex SS Forgings:
- Size Range: Custom dimensions up to 500 mm diameter
- Weight: 1 kg – 5,000 kg (depending on design)
- Surface Finish: As-forged, machined, or polished
- Standards: ASTM A182, ASME SA-182, UNS S32205/S31803
- Forging Type: Open-die, closed-die, or 2205 Duplex Hot Forging
Our 2205 Duplex stainless steel forging suppliers tailor specs to your needs!
Features (Advantages)
Why choose 2205 Duplex SS Forgings?
- High Strength: Twice the yield strength of 316 stainless steel.
- Superior Corrosion Resistance: Fights pitting and stress corrosion cracking.
- Cost-Effective: Lower nickel content than austenitic grades.
- Toughness: Excellent fatigue resistance for cyclic loads.
- Versatility: Ideal for 2205 Duplex Custom Forging applications.
Applications
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- Oil & Gas: Valves, flanges, and pump shafts.
- Chemical Processing: Pressure vessels and heat exchangers.
- Marine: Propeller shafts and fittings with 2205 Duplex forging stainless steel.
- Pulp & Paper: Digester components.
- Energy: Turbine parts and piping systems.
Chemical Composition
| Element | Symbol | Weight % |
|---|---|---|
| Chromium | Cr | 22.0 - 23.0 |
| Nickel | Ni | 4.5 - 6.5 |
| Molybdenum | Mo | 3.0 - 3.5 |
| Nitrogen | N | 0.14 - 0.20 |
| Carbon | C | ≤ 0.03 |
| Manganese | Mn | ≤ 2.0 |
| Silicon | Si | ≤ 1.0 |
| Phosphorus | P | ≤ 0.03 |
| Sulfur | S | ≤ 0.02 |
| Iron | Fe | Balance |
Mechanical Properties
| Property | Units | Typical Value | Range |
|---|---|---|---|
| Tensile Strength | MPa | 700 | 620 - 850 |
| Yield Strength (0.2% Offset) | MPa | 500 | ≥ 450 |
| Elongation | % | 30 | ≥ 25 |
| Hardness (Brinell) | HB | 260 | ≤ 293 |
| Hardness (Rockwell C) | HRC | 28 | ≤ 31 |
| Modulus of Elasticity | GPa | 200 | 190 - 210 |
| Density | g/cm3 | 7.8 | 7.75 - 7.85 |
| Fatigue Strength | MPa | 400 | 350 - 450 |
| Shear Strength | MPa | 500 | 450 - 550 |
| Impact Toughness (Charpy V) | J (at 20°C) | 150 | ≥ 100 |
| Impact Toughness (Charpy V) | J (at -40°C) | 75 | ≥ 50 |
Chemical Properties
2205 Duplex SS Forgings resist chemicals well:
- Acids: Strong against nitric and dilute sulfuric; moderate with hydrochloric.
- Alkaline Solutions: Good in caustic environments up to 150°C.
- Chlorides: Excellent resistance to chloride pitting and stress corrosion.
Avoid strong reducing acids for prolonged exposure.
Things to Note (Limitations)
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- Temperature: Embrittles above 300°C (572°F); not for high-heat use.
- Formability: High strength requires robust forging equipment.
- Cold Weather: Toughness drops below -50°C (-58°F).
Corrosion Data
| Environment | Corrosion Rate (mm/year) | Resistance |
|---|---|---|
| Fresh Water | < 0.01 | Excellent |
| Salt Water (3.5% NaCl) | 0.05 - 0.1 | Good |
| Humid Air | < 0.02 | Excellent |
| Nitric Acid (10%) | 0.01 - 0.03 | Excellent |
| Sulfuric Acid (3%) | 0.1 - 0.5 | Moderate |
Contact us for detailed corrosion resistance data specific to your application.
Welding and Fabrication Tips
Optimize 2205 Duplex SS Forgings:
- Welding: Use TIG/MIG with ER2209 filler, keep the interpass below 150°C, and do not use post-weld heat treatment.
- Forging: Heat to 1100-1150°C for 2205 Duplex Hot Forging; air cool after shaping.
- Machining: Requires high power; reduce cutting speed by 20% vs. 316.
Our 2205 Duplex stainless steel forging manufacturers ensure precision.
Customer Reviews
Frequently Asked Questions
Q1: How do 2205 Duplex Stainless Steel Forgings compare to 316 stainless steel forgings?
A: 2205 Duplex SS Forgings outshine 316 with nearly double the yield strength (450 MPa vs. 205 MPa) and better resistance to chloride pitting and stress corrosion cracking, thanks to their duplex structure and molybdenum content. While 316 is more ductile, 2205 is the pick for high-stress, corrosive environments.
Q2: What’s the ideal application for 2205 Duplex SS Forging?
A: Think tough conditions: oil and gas valves, chemical plant flanges, or marine shafts. 2205 Duplex forging stainless steel excels where strength and corrosion resistance are non-negotiable—perfect for 2205 Duplex Hot Forging in pressure vessels or offshore rigs.
Q3: Are 2205 Duplex Stainless Steel Forgings weldable?
A: Yes, they weld well with TIG or MIG using ER2209 filler wire. Keep interpass temperatures below 150°C to maintain the austenite-ferrite balance—no post-weld heat treatment needed. Ideal for fabricating complex 2205 Duplex ss forging assemblies.
Q4: Can 2205 Duplex SS Forgings handle high temperatures?
A: Up to 300°C (572°F), they’re great—beyond that, embrittlement from phase changes can occur (e.g., 475°C embrittlement). For sustained high heat, consult us, but they’re built for ambient-to-moderate temp challenges.
Q5: How resistant are 2205 Duplex SS Forgings to saltwater?
A: Extremely resistant! The chromium, molybdenum, and nitrogen combo in 2205 Duplex SS Forgings fights pitting and crevice corrosion in saltwater far better than 304 or 430 grades. Perfect for marine and coastal applications.