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steel grade:
XM-25 / UNS S45000 / Custom 450
Product Description XM-25 / UNS S45000 / Custom 450
Corrosion resistance: containing 14% -16% chromium, 5% -7% nickel, and 0.5% -1.0% molybdenum, it can resist acidic media and high-temperature oxidation corrosion, suitable for chemical equipment and marine environments.
Precipitation hardening performance: By solid solution treatment (1050-1100 ℃) and aging treatment (480-620 ℃), the hardness and strength are significantly improved, meeting the requirements of high stress components.
Physical stability: Density of 7.93 g/cm ³, low coefficient of thermal expansion, excellent dimensional stability at high temperatures, suitable for precision instruments and high-temperature fasteners.
XM-25 / UNS S45000 / Custom 450 chemical composition
| Carbon | 0.05 max |
| Chromium | 14.00 - 16.00 |
| Copper | 1.25 - 1.75 |
| Iron | Balance |
| Manganese | 1 max |
| Molybdenum | 0.5 - 1 |
| Nickel | 5.00 - 7.00 |
| Niobium | Min:8 x C |
| Phosphorus | 0.03 max |
| Silicon | 1 max |
| Sulphur | 0.03 max |
XM-25 / UNS S45000 / Custom 450 steel
Generally employed in applications where standard austenitics fail in terms of strength requirements in corrosive environments and martensitics fail in terms of corrosion resistance.
It effectively brings together the best of both worlds.
XM-25 / UNS S45000 / Custom 450 mechanical properties:
Mechanical Properties
| |
H900 | H950 | H1000 | H1025 | H1050 |
| Tensile strength Rm （MPa） |
1240 | 1170 | 1100 | 1035 | 1000 |
| Yield strength Rp0.2（MPa）min |
1170 | 1100 | 1035 | 965 | 930 |
| Elongation A（%）min |
6 | 7 | 8 | 12 | 9 |
| Reduction of area Z（%）min |
40 | 40 | 40 | 45 | 45 |
| Charpy AKv min |
|||||
| Hardness HBW |
363 | 341 | 331 | 321 | 321 |
Hardness:321HBW
Typical applications XM-25 / UNS S45000 / Custom 450
Mechanical manufacturing: precision molds, shaft parts, wear-resistant cutting tools.
Energy and chemical industry: reaction vessels, valves, high-temperature pipelines .
Aerospace: Engine fasteners, turbine disks, and load-bearing structural components .
CONTACT: Kelly He
E-mail: yihe15@aliyun.com
Skype: yihe15
