PROPRIETARY CPM 15 V Tool steels

Material group: Ferrous Alloys / Tool steels
Country / Standard: PROPRIETARY

Data updates

Latest Update: 2022-11
Total number of updates: 5
Update History
2017-11 2016-03 2015-08 2014-03

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PROPRIETARY CPM 15 V Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 3.4000
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 5.2000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mo
VALUE
≤ 1.3000
UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2

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PROPRIETARY CPM 15 V Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 235 GPa
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Density
7.25 — 8 kg/dm³
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Poisson Coefficient
val1
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This material has 39 properties — only a subset is shown here.

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PROPRIETARY CPM 15 V Heat Treatments

  • Forged: 1095-1150°C. Do not forge below 930°C. Slow cool. Annealed: Heat to 870°C, hold 2 hours. Slow cool no faster than 15°C per hour to 540°C, then furnace cool or cool in still air to room temperature. Stress relieved: Annealed Parts: Heat to 595-705°C, hold 2 hours, then furnace cool or cool in still air. Hardened Parts: Heat to 15-30°C below original tempering temperature, hold 2 hours, then furnace coolor cool in still air. Hardened: Preheat: Heat to 815-845°C Equalize. A second pre-heat stage at 1010-1040°C is suggested for vacuum or atmosphere hardening. Austenitize: 1065-1175°C, hold time at temperature 20-30 minutes. Quench: Air or positive pressure quench (2 bar minimum) to below 50°C, or salt or interrupted oil quench to about 540°C, then air cool to below 50°C. Salt bath treatment, if practical, will ensure the maximum attainable toughness for a given hardening treatment. Temper: Two times at 540°C, 2 hrs. minimum each time. Temper three times for hardening temperatures over 1150°C.
  • SOFT ANNEALING The material is heated uniformly to a temperature of 850 - 900 °C; maintain temperature for 2 hours and allow to cool to 540 °C in the furnace at a cooling rate of 10°C per hour. This is followed by cooling in still air. Hardening after soft annealing: approx. HB 250/ 270. STRES S RELIEVING Stress relieving follows rough machining by heating to 600 - 700°C. Once complete heat penetration has been reached, the material is allowed to cool in the furnace to approx. 500°C followed by cooling in air. HARDENING usually involves the use of 2 preheating stages (450-500°C/ 850-900°C). The material is then rapidly heated from the preheating temperature to the austenitizing temperature of 1070 °C to 1180 °C; 1070 °C for achieving optimum toughness and 1180 °C for achieving maximum wear resistance. To achieve a corresponding degree of dissolution of the alloy elements as well as an appropriate hardening and tempering level, a minimum heat penetration time of 30 min. is recommended for hardening at 1070 °C and a minimum heat penetration time of 10 min. for hardening at 1180 °C. These temperature equalisation times should be correspondingly adapted for large or very thick-walled material cross-sections. QUENCHING Air, hot bath or interrupted oil quenching can be used. We recommend hot bath quenching at approx. 550°C. TEMPERING Temper immediately after the tools have been quenched to a temperature below 40°C. Two-stage tempering is obligatory while triple tempering is recommended particularly when hardening takes place at temperatures above 1150°C. It is important to ensure the tools are quenched to room temperature between the individual tempering processes. The standard tempering temperature is 540°C. With exception to the stress relieving procedure, temperatures below 540°C should be avoided in order to ensure effective tempering treatment. SURFACE TREATMENTS CPM 10 V can be nitrided or PVD/ CVD coated.

PROPRIETARY CPM 15 V Mechanical Properties

Temperature

PROPERTY / VALUE
Brinell Hardness (HB)
255 — 277
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  • 1Cross References
  • 14Composition
  • 5Mechanical Properties
  • 13Physical Properties
  • 2Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 4Total Suppliers