015Cr21Ni26Mo5Cu2
Stainless Steel015Cr21Ni26Mo5Cu2
High-Mo austenitic, dilute H2SO4 & seawater resistant. (GB/T 20878; equiv UNS N08904 / EN 1.4539 / GB 015Cr21Ni26Mo5Cu2). Nominal values—confirm mill certificate.
Chemical Composition (%)
| C | 0.02 |
|---|---|
| CR | 19 |
| NI | 23 |
| MO | 4 |
| CU | 1 |
Mechanical Properties
Tensile:≥490 MPa;Yield:≥220 MPa;Elong:≥35%
Chinese Standard
T 20878 015Cr21Ni26Mo5Cu2
Equivalent Standards
GB 015Cr21Ni26Mo5Cu2
Equivalent Grades
Heat input and interpass must be controlled to keep the ferrite/austenite balance; avoid exposure 300–400 °C (sigma) and use low carbon. Sensitive to chloride SCC above ≈60 °C.
Applications
高钼奥氏体，耐稀硫酸海水。,"Plate
Available Forms
Bar
Uses
Tube"
Heat Treatment
Duplex stainless steel with a mixed austenite/ferrite structure giving roughly twice the yield strength of austenitic grades plus excellent chloride resistance. Used in desalination, offshore, pulp & paper, heat exchangers and chemical tankage.
Precautions
Solution anneal 1020–1100 °C and rapid quench; reheating near 300–400 °C (sigma phase) and 475 °C embrittlement zones must be avoided.
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