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660A
ASME SA543 660B
ASME SA453 660B
A286
UNS S66286
X6NiCrTiMoVB25 15 2
1.4980
BS4882 B17B
Z6NCTDV25-15
SUH 660
SS 14 25 70
Base Element Fe(Iron)
| Chemistry | Min | Max |
|---|---|---|
| Al(Aluminium) | 0.35% | |
| B(Boron) | 0.001% | 0.01% |
| C(Carbon) | 0.08% | |
| Cr(Chromium) | 13.5% | 16% |
| Mn(Manganese) | 2% | |
| Mo(Molybdenum) | 1.15% | |
| Ni(Nickel) | 24% | 27% |
| P(Phosphorus) | 0.04% | |
| S(Sulphur) | 0.03% | |
| Si(Silicon) | 1% | |
| Ti(Titanium) | 1.9% | 2.35% |
| V(Vanadium) | 0.1% | 0.5% |
| Mechanical Property | Min | (Max/Min) |
|---|---|---|
| Ultimate Tensile Strength (UTS) | 895 MPa | |
| 0.2% Proof Stress | 585 MPa | |
| Elongation | 15% | |
| Gauge Length | A4D | |
| Hardness (Brinell) | 248 | 341 HB |
| Hardness (Rockwell C) | 24 | 37 HRC |
Heat Treatment;
Solution treatment: 900 + or – 14 degs C, hold 2h, min, and liquid quench.
Hardening treatment: 720 + or – 14 degs C, hold 16h, air cool.
Bolting
Used as fasteners for pressure vessels and valve flanges in high temperature services.
ASTM A638
X5NiCrTi26-15
X5NiCrTiMoVB25 15 2
X5NiCrTiMoVB25 15 2 PH
X4NiCrTi25 15
X4NiCrTi25 15
1.4606
1.4944
1.2779
1.4943 LW
286S31
DTD 5076
HR251
HR52
HR51
662F20
Z3NCT25
E-Z6NCT25(AIR)
AICMA FE-PA92-HT
Z3NCT25
Z6NCT25
0Cr15Ni25Ti2MoAlVB
T200 Extra
AMS 5731
AMS 5732
AMS 5734
AMS 5737
AMS 5525
HR51
HR525
HR650
