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Technical Comparisons: |
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| 2507 |
Zeron® 100 |
Contains no Tungsten (W), |
Contains some Cu.
Replaces some Molybdenum (Mo)
with Tungsten (W)
Lower Nitrogen |
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Typical chemical composition weight and mechanical properties for flat rolled products |
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| Grade |
2507 |
Zeron 100® |
| EN |
1.4410 |
1.4501 |
| ASTM |
S32750 |
S32760 |
| Cr |
25.0 |
25.3 |
| Ni |
7.0 |
7.0 |
| Mo |
3.9 |
3.5 |
| N |
0.27 |
.022 |
| Cu |
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0.5 |
| W |
|
0.6 |
| PRE* |
≥42 |
41 |
| Rp0.2** |
80 ksi (550 MPa) |
80 ksi (550 MPa) |
| Tensile Strength** |
116 ksi (795 MPa) |
108 ksi (750 MPa) |
| Elongation** |
15% |
25% |
*PREnW=%CR + 3.3x(%Mo + 0.5x%W) + 16x%N
**min values at room temperature according to ASTM A240-09a |
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Similarities
- No difference in seawater and other neutral environments. Norwegian Offshore standard, NORSOK, groups
Zeron® 100 and 2507 as interchangeable alloys.
- Both alloys are readily available. 2507 covers a wider product and dimensional program.
- Established and tested welding recommendations ensure good, quality welds in both alloys. 2507 is covered in A923 – for quality assurance of duplex alloys
standardized by ASTM.
- Both alloys have very similar corrosion resistance in strong mineral acids.
- Both alloys have the same limiting application temperatures in different standards. There is no significant difference between the two alloys at room temperature. In ASTM A240, for flat products, the minimum tensile strength for 2507 is higher than Zeron® 100.
Consideration
- Some studies suggest a higher tendency to embrittlement for tungsten-containing stainless steels when heat treated outside recommended temperature time limits.
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