Nitralloy 135® Bar, Nitriding Steel AMS 6470, 6472, 2301
Nitralloy135® Bar B5EIA is a Chrome-Moly alloy steel with additions of aluminum typically used for nitrided parts requiring high surface hardness and heat resistance. Parts fabricated from Nitralloy 135® bar typically show less distortion in heat treating than similar parts fabricated from alloys requiring quenching and tempering to achieve similar surface hardness. This alloy may be heat treated in dissociated ammonia gas.
Inventory Size Ranges for
Nitralloy 135®
| Type |
Thickness |
AMS Standards | ASTM | Get a Quote |
| Bar |
2.000" - 7.000" |
AMS 6470, AMS 6472, AMS 2301 | ASTM A 370, ASTM A 29, ASTM A 355 |
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Other industry standards we comply with:
- GE B5E1A S-22
- EN 10204
- Siemens Westinghouse PD-Spec 10305 HD SWPC AB
Common Trade Names
- Nitralloy®
- Nitrided steel®
Industry Applications for
Nitralloy 135®
- Crankshafts
- Bolts
- Aircraft gears
- Pinions
Chemical Composition
Chemical Composition Percentage of Nitralloy 135®
|
Element |
Min |
Max |
| C |
Carbon |
0.38 |
0.43 |
| Mo |
Molybdenum |
0.30 |
0.40 |
| Mn |
Manganese |
0.50 |
0.80 |
| Al |
Aluminum |
0.95 |
1.30 |
| Si |
Silicon |
0.20 |
0.40 |
| Ni |
Nickel |
- |
0.25 |
| Cr |
Chromium |
1.40 |
1.80 |
| Cu |
Copper |
- |
0.35 |
| S |
Sulfur |
- |
0.025 |
| P |
Phosphorous |
- |
0.025 |
Physical Properties
- Density: 0.297 lb/in3 (8.22 g/cm3)
Mechanical Properties
Physical Properties of Nitralloy 135®| Property | Value |
|---|
| Tensile Strength | 112 ksi min |
| Yield Strength | at 0.2% offset 90 ksi min |
| Elong in 4D | 16% min |
| Reduction of Area | 50% min |
| Bars | typically provided in the quenched and tempered condition |
| Hardness | Up to 3.125" dia inclusive BHN 241/285 |
| Over 3.125" to 6.000" inclusive BHN 229/285 |
Additional Info
