How steel is shipped
Bars are shipped as 48" bars as long as they can be shipped with UPS. 72" bars are cut in half for shipping, 60" bars are cut to 36 +24 for shipping. If shipped with Canada Post or another carrier, they will need to be cut half (24" for 48", 36" for 72", 36+24" for 60" bars)
If you want steel cut to 4", 6", 8" or 12" pieces, please purchase by the foot and put a note in the cart "Order Instructions" drop down box of the size you would like it cut.
No instructions will result in the longest possible piece being shipped.
CPM CruWear
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CRU-WEAR® is an air hardening tool steel possessing an excellent combination of high wear resistance and toughness. This grade is readily machined in the annealed condition (using parameters similar to D2) and exhibits minimal istortion in hardening. The normal heat treatment is compatible to a wide variety of surface coatings such as nitriding, tin coating, etc.
CRU-WEAR excels in applications that require higher wear resistance than D2, greater toughness than M2 high speed steel, or in applications that require both.
The combination of wear resistance, compressive strength, and exceptional toughness make CRU-WEAR a great choice for a wide variety of demanding tooling applications. |
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| Typical Chemistry |
| Carbon |
1.10% |
| Manganese |
0.35% |
| Silicon |
1.10% |
| Chromium |
7.50% |
| Vanadium |
2.40% |
| Tungsten |
1.15% |
| Molybdenum |
1.60% |
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| Typical Applications |
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Punches |
Blanking Dies |
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Knives |
Thread Rolling Dies |
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Shear Blades |
Rolls |
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Forming Blades |
Planer Blades |
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Gauges |
Wear Parts |
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Coining Dies |
Trim Dies |
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Laminating Dies |
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Thermal Treatments
Annealing: 1550-1600F(845-870C) Hold 2 hours, slow cool 50F(10C) per hour maximum to 1200F(650C).
Hardness: 225/255 BHN
Stress Relieving: (Prior to heat treat) 1100-1300F (595-740C), hold 2 hours and air or furnace cool.
Straightening: Best done warm 400-800F(200-430C).
Hardening: (Salt, vacuum or atmosphere)
Preheat: 1100-1200F (595/650C) equalize, 1550-1600F (845-870C) equalize.
High Heat: 1850-2050F (1010-1120C), hold 20/45 minutes at temperature.
Quench: Salt, air or positive pressure to below 150F(65C) or to a temperature at which the tool may be held comfortably in the bare hands.
Surface protection techniques should be used to prevent unintentional decarburization, carburization, or oxidation (scaling).
Tempering: 900-1050F (480-565C)
CRU-WEAR should be tempered as soon as the parts have cooled below 150F(65C). The usual tempering temperature is 900-1050F(480-565C) but this may be varied to suit the hardness or toughness requirements. Tempering time should be 2 hours minimum or at least one hour per inch (per 25mm) of total thickness for sections over 2"(50mm) thick. Double tempering is mandatory. Triple tempering is recommended. When multiple tempering is employed, the workpiece should be cooled to room temperature between the tempering operations.
Stress Relieving (Hardened Parts): Temper 25F(15C) below original tempering temperature.
Hardening Data
Air cooled from austenitizing temperature shown and double tempered 2+2 hours.
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Tempering
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HEAT TREAT RESPONSE
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Temperature
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1850F
(1010C)
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1950F
(1065C)
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2050F
(1120C)
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°F
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°C
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| AQ |
63-65 |
63-65 |
62-64 |
| 900 |
480 |
61-63 |
62-64 |
61-63 |
| 950 |
510 |
61-63 |
62-64 |
64-66 |
| 1000 |
540 |
57-59 |
60-62 |
63-65 |
| 1025 |
550 |
56-58 |
58-60 |
61-63 |
| 1050 |
565 |
54-56 |
55-57 |
59-61 |
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| Note: Optimal performance indicated by boxed hardness. |
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