| Trade name | Eq. ASTM Specification | Condition | Tensile Strength, ksi | 0.2% Offset Yield Strength | Elongation in 2 in., % | Reduction of Area, % | Hardness, Brinell (Max) | Charpy Impact |
|---|---|---|---|---|---|---|---|---|
| Incoloy 925 SA | ASTM A276/A 479 Cond.A | Solution Annealed | 109 | 80 | 25 | – | 290 | – |
| Incoloy 925 SA | ASTM A1082 | Solution Annealed | 109 | 80 | 25 | 30 | 290 | – |
| Incoloy 925 FG | ASTM A276 Cond.S | Solution Annealed+Strain Hardened | 125 | 105 | 16 | – | 335 | – |
| Incoloy 925 FG | ASTM A193 Grade B7 | Solution Annealed+Strain Hardened | 125 | 105 | 16 | 50 | 321 | 40 Joules (29.5 ft. lbf) minimum at -46oC (-50oF) |
| Incoloy 925 FLT | ASTM A320 Grade L7 | Solution Annealed+Strain Hardened | 125 | 105 | 16 | 50 | 321 | 27 Joules (20 ft. lbf) minimum at -101oC (-150oF) |
| Wrought (UNS S32760) | Cast (UNS J93380) | |
|---|---|---|
| Yield Strength (0.2% offset) | 80 ksi (550 MPa) | 65 ksi (450 MPa) |
| Tensile Strength | 109 ksi (750 MPa) | 101 ksi (700 MPa) |
| Elongation in 50mm | 25% | 25% |
| Hardness | 28 HRC Max | 24 HRC Max |
| Temp, °F (°C) |
Yield Strength, 0.2% offset ksi (MPa) |
Tensile Strength ksi (MPa) |
|---|---|---|
| 68 (20) | 80 (550) | 109 (750) |
| 122 (50) | 73 (500) | 105 (725) |
| 212 (100) | 68 (470) | 102 (700) |
| 302 (150) | 65 (450) | 99 (680) |
| 392 (200) | 62 (430) | 97 (670) |
| 482 (250) | 58 (400) | 94 (650) |
| 572 (300) | 56 (385) | 92 (635) |
| Temp, °C (°F) |
Yield Strength, 0.2% offset ksi (MPa) |
Tensile Strength ksi (MPa) |
|---|---|---|
| 68 (20) | 550 (80) 550 | 109 (750) |
| 122 (50) | 470 (68) 470 | 102 (700) |
| 212 (100) | 430 (62) 430 | 97 (670) |
| 302 (150) | 400 (58) 400 | 90 (620) |
| 392 (200) | 380 (55) 380 | 88 (610) |
| 482 (250) | 370 (54) 370 | 87 (600) |
The properties for forgings are typical values for section
thicknesses up to 11.81” (300mm) solid or 9.84” (250mm) in an annulus with a minimum
bore of 3.94” (100mm).
As the properties from forgings are very dependent upon the
product route and the actual forging ratio, then properties and design are by agreement
for other than standard items.
| Temp, °C (°F) | Yield Strength, 0.2% offset ksi (MPa) | Tensile Strength ksi (MPa) |
|---|---|---|
| 68 (20) | 65 (450) | 101 (700) |
| 122 (50) | 59 (410) | 98 (675) |
| 212 (100) | 55 (380) | 94 (650) |
| 302 (150) | 52 (360) | 91 (630) |
| 392 (200) | 51 (350) | 87 (600) |
| 482 (250) | 48 (330) | 83 (570) |
| 572 (300) | 46 (320) | 78 (540) |
Incoloy 925 has good impact strength. There is no true ductile
brittle transition, just a gradual decrease in impact energy as the temperature is
lowered. The impact energy varies according to product type and production route. Some
typical values are shown in Figure 1 on the following page.
The impact strength of welded Incoloy 925 is slightly less than that of parent metal
(See also figure 1). Present data suggests that 30 ft. lbf (40J) is a suitable
acceptance criterion for duplex stainless steels and Figure 1 shows that 40J is
achievable with all product forms of Incoloy 925 down to very low temperatures.
However, to obtain good impact toughness after welding, a higher level of impact
toughness is required in the parent metal. Incoloy 925 typically has a Charpy toughness
> 70J at -58°F (-50°C).
