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Typical Alloys
| Nominal Hardness HRC (BHN) |
Typical Equivalent Standard |
Carb | Cr | Ni | Mang | Moly | Remarks & Common Usages | |
|---|---|---|---|---|---|---|---|---|
| M2 | (210-230) | ASTM A128 Gr. C | 1.2 | 2.0 | – | 12.5 | – | Crusher parts – Medium section, Hammers |
| M19 | (230-250) | – | 1.4 | 2.0 | – | 18.0 | – | Crusher parts – High abrasion, lower impact |
| M22 | (230-250) | – | 1.3 | 0.7 | – | 23.0 | – | Special high abrasion |
| Nominal Hardness HRC (BHN) |
Typical Equivalent Standard |
Carb | Cr | Ni | Mang | Moly | Remarks & Common Usages | |
|---|---|---|---|---|---|---|---|---|
| A2 | (140-170) | ASTM A27 70-36 | 0.25 | – | – | 0.6 | – | Mild carbon steel, adjusts to WCB, LCB |
| CS1 | (250-300) | ASTM A148 90-60 | 0.35 | 0.7 | – | 1.1 | – | General purpose medium strength steel |
| CS2 | (275-350) | AISI 4130 | 0.3 | 0.9 | – | 0.5 | 0.2 | Higher impact strength medium carbon steel |
| Nominal Hardness HRC (BHN) |
Typical Equivalent Standard |
Carb | Cr | Ni | Mang | Moly | Remarks & Common Usages | |
|---|---|---|---|---|---|---|---|---|
| WR1 | (min. 45HRC) | – | 0.25 | 1.1 | 0.7 | 0.8 | 0.4 | Impeller Bars, Hammers |
| WR2 | (450-500) | – | 0.35 | 1.1 | – | 1.0 | 0.4 | General wear & impact resistant |
| WR3 | (380-450) | AISI 4140 Modified | 0.4 | 1.2 | – | 1.0 | 0.3 | Diaphragm & Grate Liners |
| WR7 | (450-500) | – | 0.3 | 7.0 | – | 1.0 | – | Discharge Grates |
| UI11 | (48-57 HRC) | – | 1.6 | 13.0 | – | 0.5 max | – | Shell Liners |
| Nominal Hardness HRC (BHN) |
Typical Equivalent Standard |
Carb | Cr | Ni | Mang | Moly | Remarks & Common Usages | |
|---|---|---|---|---|---|---|---|---|
| S3 | – | ASTM A297 HH | 0.4 | 25.5 | 12.5 | 2.0 max | 0.5 max | Cooler Grates. High heat strength up to 1800°F |
| S4 | – | ASTM A297 HK | 0.4 | 25.5 | 21.0 | 2.0 max | 0.5 max | Nose Ring Segments. High heat strength up to 1900°F |
| S5 | – | ASTM A297 HN | 0.4 | 21.0 | 25.0 | 2.0 max | 0.5 max | Improved high strength at 1900°F |
| Nominal Hardness HRC (BHN) |
Typical Equivalent Standard |
Carb | Cr | Ni | Mang | Moly | Remarks & Common Usages | |
|---|---|---|---|---|---|---|---|---|
| D1 | (185-210) | ASTM A536 65/45/1 | 3.7 | – | – | – | 0.6 max | Ductile Iron |
| HE3 | – | – | 3.4 | 0.6 | – | – | 0.6 max | Heat Resistant Iron |
| Nominal Hardness HRC (BHN) |
Typical Equivalent Standard |
Carb | Cr | Ni | Mang | Moly | Remarks & Common Usages | |
|---|---|---|---|---|---|---|---|---|
| UI15 | (min. 52HRC) | ASTM A532 IIB | 2.7 | 16.0 | 2.5 max | 2.0 max | 3.0 max | Shell Liners, Impeller Bars |
| UI25 | (min. 58HRC) | ASTM A532 IIIA | 2.7 | 26.5 | 2.5 max | 2.0 max | 3.0 max | Shell Liners, Valve & Pump Parts |
| UN1 | (min. 52HRC) | ASTM A532 IA | 3.2 | 2.5 | 4.0 | 2.0 max | 1.0 max | NiHard equivalent, thin section castings |