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STUDBOLTSÂ HEX HEAD BOLTÂ HEAVY HEX NUTÂ SCREWS
INCONEL Alloy 625
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| ASME SB-443, SB-444, SB-446, SB-564, Boiler Code Sections I, III, VIII, IX; AFNOR NC 22 D Nb; VdTUV 499, AMS 5581, AMS 5599, AMS 5666, AMS 5837; DIN 17744, 17750-17752, 17754; Werkstoff Nr. 2.4856; NACE MR-01-75, UNS N06625; BS 3072, 3074, 3076 (NA21); ASTM B443, ASTM B444, ASTM B446, ASTM B564, ASTM B704, ASTM B705, ASTM B751 |
| Alloy |
% |
Ni |
Cr |
Mo |
Nb+N |
Fe |
Al |
Ti |
C |
Mn |
Si |
Cu |
P |
S |
625 |
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58 |
20 |
8 |
3.15 |
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Max. |
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23 |
10 |
4.15 |
5 |
0.4 |
0.4 |
0.1 |
0.5 |
0.5 |
0.5 |
0.015 |
0.015 |
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Material Notes:
Niobium content above includes tantalum. A nickel-chromium-molybdenum alloy with an addition of niobium that acts with the molybdenum to stiffen the alloy's matrix and thereby provide high strength without a strengthening heat treatment. The alloy resists a wide range of severely corrosive environments and is especially resistant to pitting and crevice corrosion. Used in chemical processing, aerospace and marine engineering, pollution-control equipment, and nuclear reactors. |
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| Physical Properties |
Metric |
English |
Comments |
Density |
8.44 g/cc |
0.305 lb/in³ |
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Mechanical Properties
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Tensile Strength, Ultimate |
880 MPa |
128000 psi |
 Annealed. Value at room temperature. Value at 650°C is 760 MPa. |
Tensile Strength, Yield |
460 MPa |
66700 psi |
 Annealed. Value at room temperature; 0.2% offset. Value at 650°C is 290 MPa. |
Elongation at Break |
50 % |
50 % |
 Annealed. Value at room temperature. Value at 650°C is 55%. |
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