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Model No: Custom 455 Stainless Steel
AMS 5860 Custom 455 Stainless Steel Sheet
Custom 455 stainless steel (AMS 5860) is a high-performance martensitic alloy that combines exceptional strength, corrosion resistance, and fabricability. For Custom 455 sheet, strip, bar, or forgings, contact Lork Group for high-quality, certified material tailored to your requirements.
Delivery :
FOB
minimum order :
50 kilograms
Supply Ability :
5000Tonkilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
Custom 455 (UNS S45500) is a precipitation-hardening martensitic stainless steel known for its exceptional high strength, corrosion resistance, and toughness after heat treatment. Conforming to AMS 5860, this alloy is supplied in sheet, strip, and plate forms, making it ideal for aerospace, marine, and industrial applications where standard austenitic grades (e.g., 304, 316) lack sufficient strength.
Compared to other PH (precipitation-hardening) stainless steels like 17-4PH, Custom 455 Stainless Steel sheet offers superior mechanical properties with higher yield strength (up to 1700 MPa) while maintaining good ductility and corrosion resistance.
Chemical Composition
| Element | Content (%) |
|---|---|
| Chromium, Cr | 11-12.5 |
| Nickel, Ni | 7.5-9.5 |
| Copper, Cu | 1.5-2.5 |
| Titanium, Ti | 0.80-1.4 |
| Molybdenum, Mo | 0.50 max |
| Manganese, Mn | 0.50 max |
| Silicon, Si | 0.50 max |
| Columbium, Cb + Tantalum, Ta | 0.10-0.50 |
| Carbon, C | 0.05 max |
| Phosphorus, P | 0.040 max |
| Sulfur, S | 0.030 max |
| Iron, Fe | Balance |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 1413 MPa | 204900 psi |
| Yield strength | 1345 MPa | 195100 psi |
| Modulus of elasticity | 200 GPa | 29000 ksi |
| Poisson’s ratio | 0.3 | 0.3 |
| Elongation at break | 14% | 14% |
| Hardness, Brinell | 411 | 411 |
| Hardness, Knoop (estimated from Rockwell C) | 450 | 450 |
| Hardness, Vickers (estimated from Rockwell C) | 430 | 430 |
| Hardness, Rockwell C | 44 | 44 |
Fabrication & Heat Treatment of Custom 455
1. Machining
Best performed in the annealed condition
Requires rigid tooling, slower speeds, and high-pressure coolant
Similar machining techniques to other high-strength stainless steels
2. Welding
Recommended methods:
- Shielded Metal Arc Welding (SMAW)
- Gas Tungsten Arc Welding (GTAW/TIG)
- Resistance Welding
Avoid oxyacetylene welding (can lead to cracking)
Post-weld heat treatment (aging) is required to restore strength
3. Hot Working
Forging temperature range: 899-1260°C (1650-2300°F)
Must be cooled slowly to prevent cracking
4. Cold Working
Can be cold-formed in the annealed condition
Requires intermediate annealing for severe deformation
5. Heat Treatment (Aging)
Solution Annealing: Heat to 816-927°C (1500-1700°F), then air cool
Precipitation Hardening (Aging):
- H900: 482°C (900°F) for 4 hrs → Max strength
- H1000: 510°C (950°F) for 4 hrs → Balanced strength & toughness
Why Choose Lork Group for Custom 455 Stainless Steel?
As a leading supplier of AMS 5860-compliant Custom 455 stainless steel, we provide:
- Multiple forms: Sheet, strip, plate, bar (round/flat/square), wire, forgings
- Custom heat treatment (H900, H1000, etc.)
- Strict quality control (ASTM/AMS/EN standards)
- Global export capabilities
Custom 455 stainless steel (AMS 5860) is a high-performance martensitic alloy that combines exceptional strength, corrosion resistance, and fabricability. Its ability to be precipitation-hardened makes it ideal for aerospace, defense, and industrial applications where standard stainless steels fall short.
For Custom 455 sheet, strip, bar, or forgings, contact Lork Group for high-quality, certified material tailored to your requirements.
