1.4818 (Alloy 153 MA), S30415
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ntroduction Stainless steel 153 MA has excellent mechanical properties at both elevated and very low temperatures. The presence of cerium, nitrogen and silicon contents in its composition provides the alloy good oxide stability, resistance to sigma phase precipitation and strength at high temperature. The austenitic structure offers excellent toughness even at cryogenic temperatures as well. The optimal performance of stainless steel 153 MA can be achieved at 600 to 950°C (1112 to 1742°F). Ch...
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Stainless steel 153 MA has excellent mechanical properties at both elevated and very low temperatures. The presence of cerium, nitrogen and silicon contents in its composition provides the alloy good oxide stability, resistance to sigma phase precipitation and strength at high temperature. The austenitic structure offers excellent toughness even at cryogenic temperatures as well. The optimal performance of stainless steel 153 MA can be achieved at 600 to 950°C (1112 to 1742°F).
Chemical Composition
The chemical composition of Grade 153 MA stainless steel is outlined in the following table.
| Element | Content (%) |
|---|---|
| Iron, Fe | ~ 69 |
| Chromium, Cr | 18-19 |
| Nickel, Ni | 9-10 |
| Silicon, Si | 1-2 |
| Nitrogen, N | 0.12-0.18 |
| Carbon, C | 0.04-0.06 |
| Cerium, Ce | 0.03-0.08 |
Mechanical properties
The mechanical properties of Grade 153 MA stainless steel are displayed in the following table.
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 210 | 210 |
| Ultimate Tensile Strength | 500 – 720 MPa | 72518 – 104427 psi |
| Elongation at Break | 40% | 40% |
| Modulus of Elasticity | 200 GPa | 29000 ksi |
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