80CrV2, 1.2235, 80CrV3 - tool steel

Alloy tool steel for cold working 80CrV2, 1.2235 according to DIN 17350, UNE 36018, EN 10132-4.

 

Standard Steel Grade Chemical Composition % C: Mn: Si: P: S: Cr: Ni: Mo: V: W: Cu: PN NCV1 0.75 - 0.85 0.3 - 0.6 0.15 - 0.40 <0.030 <0.030 0.4 - 0.7 <0.35 <0.20 0.15 - 0.30 <0.20 <0.35 EN 80CrV2 - 80 CrV 2 - 1.2235 0.75 - 0.85 0.3 - 0.5 0.15 - 0.35 <0.025 <0.025 0.4 - 0.6 <0.4 <0.1 0.15 - 0.25 - - DIN 80 CrV 2 0.75 - 0.85 0.3 - 0.5 0.25 - 0.40 <0.030 <0.030 0.4 - 0.7 - - 0.15 - 0.25 - - GOST 9ChF - 9KhF - 9ХФ 0.80 - 0.90 0.3 - 0.6 0.15 - 0.35 <0.030 <0.030 0.4 - 0.7 <0.35 <0.20 0.15 - 0.30 <0.20 <0.30 GOST 8ChF - 8KhF - 8ХФ 0.75 - 0.85 0.15 - 0.45 0.10 - 0.40 <0.030 <0.030 0.4 - 0.7 <0.40 <0.20 0.15 - 0.30 <0.20 <0.30 GOST 9ChS - 9KhS - 9ХС 0.85 - 0.95 0.30 - 0.60 1.20 - 1.60 <0.030 <0.030 0.95 - 1.25 <0.35 <0.20 <0.15 <0.20 <0.30

 

80CrV2, 1.2235 - characteristics and application

NCV1 is a grade with high cutting capacity and high ductility. It is characterized by high hardness and durability after heat treatment.

Steel is intended for production of tools for cold-working with wood, metal and soft plastics. Supplied in the form of flat products - sheets and strips, exhibits considerable resistance to tempering and the possibility of hardening thin elements.

The disadvantage of the products is susceptibility to warping during oil hardening. The steel is used for the production of band saws, machine knives, burrs, cutting dies, blanking dies and disc saws for wood, and metal cutting shears.

The mechanical properties of strips 80CrV2, 1.2235

• Delivery condition +A+LC according to EN 10132-4
  • Tensile strength, Rm: <720 MPa
  • The yield point, Re: <580 MPa
  • Elongation, A:> 12%
  • Hardness, HV: < 225
  • Hardness, HB: <95
• Delivery condition +QT according to EN 10132-4
  • Tensile strength, Rm: 1200 - 1800 MPa
  • Hardness, HRC: 38.5 - 52.5
  • Hardness, HV: 370 - 550
• Mechanical properties of NCV1 grade according to PN-86/H-85023
  • in softening annealed condition, HB <255
  • in condition after hardening in water, HRC >61
  • in condition after hardening in oil, HRC >59
  • Linear expansion coefficient,
  • Thermal conductivity: λ: 25.0 W⋅m⁻¹ K⁻¹
  • Linear expansion coefficient, α: ~12.0 ⋅10⁻⁶ K⁻¹

 

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Hardness after tempering in specific temperatures

Tempering temperature (℃) Hardness (HRC) 200℃ >61 250℃ 61 300℃ 58.2 350℃ 55.2 400℃ 52.0 450℃ 48.2 500℃ 44.2 550℃ 40

 

Heat and plastic processes of 1.2235, 80CrV2 steel:

• Softening annealing with slow cooling in the box, ash or sand, in a temperature of 690 - 710℃
• Softening annealing with cooling in furnace and then in the air, in a temperature of 750 - 790℃
• Hardening at 780 - 840℃ with cooling in water
• Hardening at 800 - 830℃ with cooling in oil for thin products
• Tempering at a tempering of 180 - 320℃ with cooling in air
• Relief annealing in a temperature of 600 - 700℃ with slow cooling in furnace, ash or sand
• Rolling in the range 1000 ° c, forging with a slow heating through between 1000 - 800℃ with cooling in the ash or sand

 

In the above mentioned grades the company provides:

 

Other indications and equivalents grade:

NCV1, 80CrV3, 80CrV2, 1.2235, CSN 19419, 8HF, 9HF, 80 CrV 2, 80 CrV 3, 8ChF, 8KhF, 8ХФ, 8XF, 9ChF, 9KhF, 9ХФ, 9XF, 9ChS, 9KhS, 9ХС, 9XC