Nitronic 60 Forgings
Metracore Alloys Private Limited is a manufacturer and supplier of Nitronic 60 forgings (UNS S21800) for applications where galling resistance is as important as corrosion resistance. Galling, rather than corrosion, is one of the most common causes of failure in stainless steel valve stems and threaded fasteners, as two austenitic surfaces in dry contact can seize after repeated friction. Nitronic 60 forgings are made to provide high strength, excellent wear resistance, and reliable dimensional accuracy, making them widely used in valves, fasteners, shafts, and other components that face heavy friction and demanding service conditions.
Nitronic 60 is a nitrogen-alloyed austenitic stainless steel, with silicon and manganese added to improve galling and wear resistance. The forged product adds corrosion resistance and high-temperature strength. Valve, pump, marine, food, mining, and chemical equipment builders specify it for durability, low maintenance, and extended service life. Rings, shafts, sleeves, valve bodies, and bushings: all five ship against ASTM A182, ASTM A276, and ASTM A479.
What Makes Nitronic 60 Forgings Unique?
Silicon at 3.5–4.5% and manganese at 7.0–9.0% set Nitronic® 60 Forgings apart from other austenitic stainless products. The two elements change the surface oxide and the work-hardened layer. When a forged component slides against a mating part without lubrication, asperities glide instead of welding. Self-mated couples simply refuse to seize, while conventional austenitic pairs gall at once.
Forging further strengthens the material. The hot forging process refines the grain structure, eliminates internal voids, and aligns the grain flow with the direction of loading, resulting in improved mechanical performance. A forged ring therefore carries higher fatigue and impact capability than a cast one.
Nitrogen adds strength without cold work. Oxidation resistance holds to around 980°C, and toughness stays stable under repeated loading. The grade belongs to the 6Mo family of super austenitics; molybdenum and nitrogen drive its corrosion behaviour. Forged parts deliver superior corrosion resistance, high strength and excellent toughness. Long service life is why buyers specify super austenitic stainless steel forgings over standard grades.
Why Choose Metracore Alloys Private Limited?
Metracore Alloys Private Limited treats forging supply as a technical service. Advanced forging and machining facilities work to customer drawings. Strict quality assurance applies to each order, and we arrange an independent third-party witness whenever a project demands it. Export-quality packaging protects machined surfaces in transit. Our domestic and international distribution network keeps delivery fast and pricing competitive. Share your drawing or bill of materials for a prompt quotation.
Nitronic 60 Forgings: Specifications
The table below consolidates supply data for UNS S21800 Forgings: standards, product forms, forging methods, heat treatment, and the certification issued with each order.
Material Grade
Nitronic 60 (Alloy 218)
UNS Number
S21800
Sizes in Stock
As per customer drawings and requirements
Forging Method
Open-die forging, closed-die forging, ring rolling
Form
Forged rings, shafts, sleeves, valve bodies, bushings, open die and custom precision forgings
Inspection Standards
PMI, mechanical, hardness, ultrasonic (UT), dimensional, visual
Heat Treatment
Solution annealed
Certification
EN 10204 3.1 Mill Test Certificate
Types of Nitronic 60 Forgings
We supply 7 forged families: rings, shafts, sleeves, valve bodies, bushings, open-die forgings, and custom precision work.
Forged Shafts
Forged Rings
Forged Discs
Forged Hubs
Forged Sleeves
Forged Valve Bodies
Open Die Forgings
Custom Closed Die Forgings
Forged Bushings
Reach out to Metracore Alloys Private Limited for reliable Nitronic 60 Forgings solutions.
Technical Details of Nitronic 60 Forgings
Chemical Composition
| Chromium (Cr) | 16.0–18.0 |
| Nickel (Ni) | 8.0–9.0 |
| Manganese (Mn) | 7.0–9.0 |
| Silicon (Si) | 3.5–4.5 |
| Nitrogen (N) | 0.08–0.18 |
| Carbon (C) | 0.10 max |
| Molybdenum (Mo) | 0.75 max |
| Sulphur (S) | 0.030 max |
| Phosphorus (P) | 0.040 max |
| Iron (Fe) | Balance |
Mechanical Properties
| Tensile Strength | 655 MPa (95 ksi) min |
| Yield Strength (0.2% offset) | 345 MPa (50 ksi) min |
| Elongation | 35% min |
| Hardness | 95 HRB (typical, annealed) |
| Density | 7.62 g/cm³ |
| Modulus of Elasticity | 181 GPa (26.2 × 10⁶ psi) |
Manufacturing Process of Nitronic 60 Forgings
Inspection & Manufacturing Standards
Every batch follows the ASTM specification for its form:
- ASTM A182 for pressure-part forgings
- ASTM A473 for stainless forgings
- ASTM A276 and ASTM A479 for forged bars
- ASTM A484 for dimensions and testing
The material ships with EN 10204 3.1 certification traceable to the heat. Before dispatch, source mills run six checks: PMI testing, mechanical testing, hardness testing, ultrasonic testing (UT), dimensional inspection, and visual examination. Test reports travel with the goods.
Advantages of Nitronic 60 Forgings
Six practical advantages follow from specifying this forged grade for friction-loaded service.
- Excellent resistance to galling and seizure without lubrication
- Longer component life under friction and repeated load
- Reliable corrosion resistance in water, steam and mild chemical media
- High mechanical durability from forged grain flow
- Lower maintenance and replacement spend over equipment life
- Cost-effective compared with cobalt-bearing wear alloys
Applications of Nitronic 60 Forgings
SMO 254 Forged Components serve 6 chloride-intensive industries, outlined below.
Products
Exporter, Manufacturer & Supplier of Nitronic 60 Forgings in various grades, sizes, shapes and specifications.
FAQs
What are Nitronic 60 forgings?
Nitronic 60 forgings are components forged from UNS S21800, a nitrogen-alloyed austenitic stainless steel that resists galling and wear.
What makes Nitronic 60 Forgings resistant to galling?
Silicon at 3.5–4.5% and manganese at 7.0–9.0% modify the surface oxide, so mating faces slide instead of welding.
Which standards are followed for Nitronic 60 forgings?
ASTM A182, A276, A473, A479 and A484 cover the supplied product forms. EN 10204 3.1 certification adds heat traceability.
What types of Nitronic 60 forgings do you manufacture?
We supply forged rings, shafts, sleeves, valve bodies, bushings, open die and custom precision forgings from our source mills.
Are Nitronic 60 forgings suitable for high-friction applications?
Yes. The grade was developed for exactly that duty and outperforms standard austenitic stainless steel in dry-running valve stems and bushings.
Which industries commonly use Nitronic 60 forgings?
Valve and pump manufacturing leads the demand. Chemical processing, food processing, marine, mining, cement, and oil and gas follow.
Can you manufacture custom Nitronic 60 forgings as per drawings?
We can arrange custom forgings to your drawings. Scope runs from forging and heat treatment through machining and certification.
Do you provide mill test certificates and third-party inspections?
We do. An EN 10204 3.1 mill test certificate accompanies every consignment, and third-party inspection is available.