Cr6wv Cold Work Tool Steel SKD12 Hot Rolled/Forged Steel Flat Round Bar

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Stainless Steel Scrap
• Technique: Forged
• Shape: Plate
• Surface Treatment: Polished
• Model NO.: Round bar
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Wooden
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7214100000
• Production Capacity: 5000 Ton/Year

Product Description

Introduction:
Cr6WV is a medium alloy cold work mold steel with good comprehensive properties. The steel
has small deformation and good hardenability. It has good wear resistance and certain impact
toughness.
  
Chemical Composition

C	Si	Mn	Cr	W	V	P	S
1.00~1.15	≤0.40	≤0.40	5.50~7.00	1.10~1.50	0.50~0.70	≤0.030	≤0.030

Cr6WV Steel Physical Properties
Critical temperature of cr6wv steel

critical point	Ac1	Acm	Ar1	Arm	Ms	Mf
Temperature (approximate) / ºC	815	845	625	775	150	-100

Linear expansion coefficient of cr6wv steel

Temperature / ºC	100~250	250~350	350~600
Expansion coefficient / ºC - 1	10.3×10-6	10.3×10-6	10.3×10-6

Heat Treatment

General annealing
The heating temperature is 830-850 degrees, the furnace is cooled to below 550 degrees,
and the furnace is air-cooled. The hardness after annealing is 229HBW.
Warm annealing process
Heating temperature 830-850 degrees, isothermal temperature 700-720 degrees. Furnace
cooling to 550 degrees air cooling, Hardness ≤ 229HBW. Annealing metallographic structure
is fine granular pearlite + carbide.
Quenched and tempered at low temperature. (960~980 degree oil quenching, 200~300 degree tempering). After tempering, it contains carbides with a mass fraction of about 8% to 10%. The
mass fraction of retained austenite is 15% to 20%.
The tempering temperature is 150~170 degrees. The hardness is 62~63HRC. The tempering temperature is 190~210 degrees. The hardness is 58~60HRC.

Features And Application

Cr6WV steel has a wide range of uses. Manufacture of molds with high mechanical strength,
wear-resistance and shock loads. Such as drill sleeves, cold mold and punches, trimming dies, stamping dies, thread rolling dies, and thread rolling plates.