Wear Material Powder Metallurgy Tool Steel Black Surface Forging Steel Hot Rolled Steel Flat Bar Round Bar

• Type: Special Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Stainless Steel Scrap
• Technique: Forged
• Shape: Bar
• Surface Treatment: Polished
• Model NO.: powder tool steel
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Die Steel Bar
• Length: 2500-5500mm
• Material: HSS
• Usage: Gear Hob
• Customized Support: OEM
• Transport Package: N/M
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7226911000
• Production Capacity: 1000ton/Month

Product Description

Detailed Photos

Product Description

WEAR is an air-hardening tool steel, heat treatable to HRC 60-65. Designed as an CPM upgrade to conventional Cru-Wear and D2, it offers better wear resistance, much greater toughness and higher attainable hardness. Both D2 and WEAR contain carbides for wear resistance, but WEAR has more vanadium carbides than D2. Vanadium carbides are harder than chromium carbides and are much more effective in providing wear resistance. WEAR's higher attainable hardness results from the fact that it contains sufficient tungsten and molybdenum to cause a secondary hardening response, (up to HRC 65), which does not occur in D2. WEAR tempers at a higher range (900-1050°F) than D2 (400-600°F), so it is more compatible with a wide variety of surface treatments. Finally, because CPM WEAR is made as CPM, it will resist chipping and breakage more so than most conventionally made tool steels

Typical Applications:
Stamping or Forming Tools
Rolls
Thread Rolling Dies
Lamination Dies
Industrial Knives and Slitters
Fineblanking Tools
Wear Parts
Plastic Injection Feeder Screws and Tips
Punches and Dies
Blanking Dies
Coining Dies
Trim Dies
Shear Blades
Scrap Choppers
Tire Shredders

Chemical Composition:

Wear	Carbon	Chromium	Vanadium	Tungsten	Molybdenum
	1.1%	7.5%	2.4%	1.15%	1.6%

Physical Properties:   
Elastic Modulus     30 X 106 psi       (207 GPa)   
Density              0.28 lbs./in3     (7.8 g/cm3)
Thermal Conductivity  
BTU/hr-ft-°F      W/m-°K      cal/cm-s-°C
at 200°F (95°C)        13.6            23.5           0.056
Coefficient of Thermal Expansion  
in/in/°F                  mm/mm/°C
70-600°F (20-325°C)      6.2X10-6                  (11.2X10-6)
Thermal Treatments:
Annealing:
Heat to 1550-1650°F (840-900°C), hold 2 hours, slow cool 50°F (25°C) per hour to 1200°F (650°C).

Annealed Hardness: About BHN 225/255

Stress Relieving
Annealed Parts:
Heat to 1100-1300°F (595-705°C), hold 2 hours, then furnace cool or cool in still air.
Hardened Parts:
Heat to 25°F (15°C) below the original tempering temperature, hold 2 hours, then furnace cool or cool in still air.

Hardening
It is customary to use two furnaces: one furnace to pre heat and the second furnace to austenitize. This ensures that the transition from the pre-heat temperature to the austenitizing temperature occcurs fairly rapidly.

Preheat: Heat to 1550-1600°F (840-870°C) Equalize.
Austenitize: 1850-2050°F (1010-1120°C), Hold time at temperature 20-45 minutes.

Quench:
Air or positive pressure quench (2 bar minimum) to below 125°F (50°C) Salt bath treatment, if practical will ensure the maximum attainable toughness for a given hardening treatment.

Temper:
900-1050°F (480-565°C). Double tempering is mandatory, and triple tempering is recommended. Cool to room temperature in between tempers. Temper 2 hours minimum each time or at least 1 hour per inch (25mm) of thickness for sections over 2" (50mm) thick.

Size Change: Approx. +0.15%

Recommended Heat Treatment: For the best combination of toughness and wear resistance, austenitize at 1950°F (1065°C). Temper 3 times at 1000°F (540°C).

Aim hardness: HRC 62

Higher austenitizing temperatures can be used to obtain higher hardness, at a slight decrease in impact resistance. The lower austenitizing temperatures provide the best impact toughness.