Cpm3V 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

CPM 3V, made by the Crucible Particle Metallurgy process, is designed to provide maximum resistance to breakage and chipping in a highly wear-resistant tool steel. CPM 3V offers impact toughness greater than A2, D2, CPM Cru-Wear or Z Wear PM and CPM M4, approaching the levels of S7 and other shock resistant grades, yet it provides excellent wear resistance, high hardness and thermal stability for coatings. Intended to be used at HRC 58-60, CPM 3V can replace high alloy tool steels in wear applications where chronic tool breakage and chipping problems are encountered. The CPM process produces very homogeneous, high quality steel characterized by superior dimensional stability, grindability, and toughness compared to steels produced by conventional processes..

Typical Applications:
Stamping or Forming Tools
Punches and Dies
Powder Compaction Tooling
Blanking Dies
Industrial Knives and Slitters
Shear Blades
Fineblanking Tools
Scrap Choppers
Cold Heading Tooling
Rolls
Plastic Injection Feeder Screws and Tips


Chemical Composition:

CPM 3V	Carbon	Chromium	Vanadium	Molybdenum
	0.8%	7.5%	2.75%	1.3%

Physical Properties:
Elastic Modulus      30 X 106psi         (207 GPa)
Density              0.28 lbs./in3       (7.8 g/cm3)
Thermal Conductivity 
BTU/hr-ft-°F         W/m-°K          cal/cm-s-°C 
200°F (95°C)   14                     24.2              0.057

Coefficient of Thermal Expansion
in/in/°F               mm/mm/°C 
70-400°F (20-200°C)       5.9X10-6               (10.6X10-6)

Thermal Treatments:
Annealing:
Heat to 1650°F(900°C), hold 2 hours, slow cool no faster than 25°F (15°C) per hour to 1100°F (595°C), then furnace cool or cool in still air to room temperature.
Annealed Hardness: About BHN 241

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 25-50°F (15-30°C) below original tempering temperature, hold 2 hours, then furnace cool or cool in still air.

Hardening Preheat:
Heat to 1500-1550°F (815-845°C) Equalize.

Austenitize: 
1875-2050°F (1025-1120°C), hold time at temperature 20-45 minutes. Quench: Air or positive pressure quench (2 bar minimum) to below 125°F (50°C), or salt or interrupted oil quench to about 1000°F (540°C), then air cool to below 125°F (50°C). Salt bath treatment, if practical, will ensure the maximum attainable toughness for a given hardening treatment.

Temper: 
Three times at 1000-1050°F (540-565°C), 2 hours minimum each time.

Size Change: +0.03/0.05%

Recommended Heat Treatment:
For the best combination of toughness and wear resistance, austenitize at 1950°F (1065°C), hold 30-45 minutes, and quench. Temper 3 times at 1000°F (540°C).

Aim hardness: HRC 58-60

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.