Custom 450®
UNS S45000
Description
Custom 450® is a specialized age-hardenable martensitic stainless steel that provides moderate strength (similar to 410 stainless steel), as well as enhanced corrosion resistance (similar to 304 stainless steel) due to high chromium content. It also exhibits an excellent yield strength in the annealed condition and it could be easily fabricated and the extremely high yield strength makes it resistant to stretching when subjected to tensile forces. The stainless can be machined, hot-worked, and cold-formed in the same manner as other martensitic age-hardenable stainless steels with mechanical properties that will depend on the aging temperature selected. These characteristics make it can be used in a variety of applications.
Chemical Component
| Cr | Ni | Si | C | Mn | Mo | Cu | S | P | Nb | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| 14.00-16.00% | 5.00-7.00% | 1.00% max | 0.05% max | 1.00% max | 0.50-1.00% | 1.25-1.75% | 0.030% max | 0.030% max | 8 x C min | Balance |
Basic Information
| Items | Custom 450® |
|---|---|
| Catalog | ACMA-Fe-A034 |
| Density | 0.28 lb/in3, 7.75 g/cm3 |
| Electrical Resistivity, ohm-cm | At 68 °F (20 °C): 0.0000992 |
| Specific Heat, BTU/lb-°F (J/g-°C) | 73-216 °F (23-102 °C): 0.114 (0.477) |
| Thermal Conductivity, BTU-in/hr-ft2-°F (W/m-K): Condition H900 | At 70 °F (21 °C): 104 (15.0); At (200 °C): 18.2 W/m-K; At (500 °C): 24.4 W/m-K |
| Mean Coefficient of Thermal Expansion, in/in-°F | 75-200 °F: 5.88 x 10-6; 75-300 °F: 5.62 x 10-6; 75-400 °F: 5.68 x 10-6; 75-500 °F: 5.80 x 10-6; 75-600 °F: 5.91 x 10-6; 75-700 °F: 5.98 x 10-6; 75-800 °F: 6.09 x 10-6; 75-900 °F: 6.13 x 10-6; 75-1100 °F: 6.17 x 10-6 |
| Modulus of Elasticity, ksi (MPa) | 28-29 x 103 (193-200 x 103) in tension |
Material Forms
Alfa Chemistry offers Custom 450® in a variety of forms, including Coil, Strip, Foil, Ribbon, Wire, Bar, Billet, Plate, Tube.
Mechanical Properties
- Mechanical properties at room temperature properties: annealed typical
| Ultimate Tensile Strength | Yield Strength | Elongation | Hardness |
|---|---|---|---|
| 142 KSI (979 MPa) | 118 KSI (814 MPa) | 13% | Re 28 |
- Mechanical properties at room temperature properties: age hardened typical
| Conditions | Ultimate Tensile Strength | Yield Strength | Elongation | Hardness |
|---|---|---|---|---|
| H900 | 196 KSI (1351 MPa) | 188 KSI (1296 MPa) | 14% | Re 42.5 |
| H950 | 187 KSI (1289 MPa) | 184 KSI (1269 MPa) | 16% | Re 41.5 |
| H1000 | 173 KSI (1193 MPa) | 169 KSI (1165 MPa) | 17% | Re 39 |
| H1050 | 160 KSI (1103 MPa) | 152 KSI (1048 MPa) | 20% | Re 37 |
| H1150 | 142 KSI (979MPa) | 92 KSI (634 MPa) | 23% | Re 28 |
Additional Properties
Corrosion Resistance: Refer to NACE (National Association of Corrosion Engineers) for recommendations.
Heat Treatment: Custom 450® can be hardened by cold working and with a heat treatment.
Welding: For best results refer to: SSINA's "Welding of Stainless Steels and Other Joining Methods".
Specifications
Coil, Strip, Foil, Ribbon, Wire, Bar, Billet, Plate, Tube: AMS 5763, AMS 5773, AMS 5863, AMS 5859, ASTM A564, ASTM A693, ASTM A 959, MR0175
Applications
- Pulp and paper
- Aircraft parts
- Power generation
- Chemical processing
- Nuclear applications
- Medical devices
- Transportation
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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