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2714

Download 2714 Spec sheet

ExELL 2714 was developed by Ellwood Specialty Steel as a special tooling quality nickel-chromium-molybdenum-vanadium steel from international standards for use in mostly hot work tools.

ExELL 2714 is characterized by excellent through hardening properties, good toughness and ductility, good hot strength and good hot hardness.

APPLICATIONS


ExELL 2714 is specifically manufactured for forging applications and a general upgrade to the more traditional die block steel grades and is recommended for:

  • Die blocks
  • Inserts
  • Sow blocks
  • Piston rods/heads
  • Hammer rams
  • Bolster plates
  • Holders
  • Trim dies

ExELL 2714 is generally supplied prehardened at a hardness of 331-375 HB. However, other temper hardness ranges are readily available.

ExELL 2714 is a very versatile alloy tool steel and performs well in other tooling and engineering applications. These include:

  • Die casting dies for lower production runs
  • Tools for hot shearing
  • Plastic molds
  • Support tools in aluminum extrusion

TYPICAL ANALYSIS

C 0.55 Ni 1.60
Mn 0.80 Cr 1.15
Si 0.25 Mo 0.50
V 0.10

 

CHARACTERISTICS

Physical Properties

Coefficient of Thermal Expansion, in/in/F

70-400 F……….0.0000070

70-600 F……….0.00000725

70-800 F……….0.0000075

Thermal Conductivity, BTU in/ft2hr F

70 F………….202

650 F………..210

1300 F……….215

Machinability: In the annealed condition, ExELL2714 exhibits a machinability rating of 80% compared to a 1% carbon tool steel. This rating shows the material is easier to machine than AISI H-13.

Critical Temperatures

Ac1 – 1350 F

Ac3 – 1420 F

Ms – 445 F

HEAT TREATMENT (General Recommendations)

STRESS RELIEVING

To minimize movement during service or heat treatment, a stress relieve can be used between the rough finish machine operations of tool making for prehardened material or annealed material before heat treatment. After rough machining, heat the part to 950F (for prehardened material) or 1200F (annealed material), equalize and hold 1-2 hours. Furnace cool to 800F and then air cool.

ANNEALING

With a protective atmosphere or vacuum furnace, heat slowly to 1300F. Equalize and hold one hour per inch of thickness. Furnace cool 20F/hr to 1000F and equalize. Air cool to room temperature.

Hardness – 250 HB max.

HARDENING AND QUENCHING

Preheating: Heat to 1200-1250F and equalize. Continue heating to hardening temperature.

Hardening: Protect against oxidation and decarburization. Austentizing (hardening) temperature is adjusted to accommodate quenching medium and required hardness response, temper-resistance, etc.

(Oil quenching increases the risk of cracking. Avoid thin and heavy sec/ons and use very generous fillets and radii).

 

Oil Quenching

Hardening Temperature

Hold Time*

As-Quenched Hardness

1530-1590F

30 min.

57 ± 2 HRC

 

 Air Quenching

Hardening Temperature

Hold Time*

As-Quenched Hardness

1580-1640F

30 min.

55 ± 2 HRC

 

*Hold time = time at temperature after tool is fully heated through

Temper as soon as quenching temperature reaches 120 – 150F.

 TEMPERING

Temper immediately after quenching to about 150F. Temper two times with intermediate cooling to room temperature.

 ExELL 2714 should be heated to the desired tempering temperature and held a minimum of two hours. Select the tempering temperature based on required hardness and prior quenching medium. Air cool to room temperature. Check hardness and adjust temperature for additional tempering operation. Repeat for second temper. Typical tempering temperature responses are:

(Use for approximate guideline only)

Tempering Temperature

Hardness HRC Oil Quench

Hardness HRC Air Quench

800F

49

47

900F

47

44

1000F

43

40

1100F

40

36

1200F

36

32

 

SURFACE TREATMENTS

If a locally higher hardness is required, ExELL 2714 lends itself readily to flame or induction hardening to 54 – 58 HRC (air cooling). Surfaces of ExELL 2714 can also be easily chrome plated or nitrided by typical or standard methods.

MECHANICAL PROPERTIES

Approximate tensile strength versus hardness at room temperature:

Hardness HRC

Tensile Strength

48

230,000psi

46

215,000psi

44

200,000psi

42

190,000psi

40

185,000psi

38

155,000psi

 

Typical elevated temperature tensile properties of material hardened and tempered to 46 HRC include:

 

Test Temp F

Yield Strength psi

Tensile Strength psi

RA %

600

158,000

185,000

45

700

145,000

172,000

50

950

90,000

130,000

65

1100

32,000

72,000

85

TOOLMAKING

For any additional information including welding, machining, grinding or EDM processing, please contact Ellwood Specialty Steel direct at: 800-932-2188

CAPABILITIES

Ellwood Specialty Steel is a fully integrated producer of a wide range of specialty tool steels. Our ExELL grades are made with advanced ASEA-SKF steel making capabilities which include an ultra high powered electric arc furnace with subsequent state of the art ladle refining and vacuum degassing equipment for the most complete and modern ladle metallurgy technology.

Our steel making expertise and capability is further enhanced from a long forging history with optimum forging and heat treating practices to develop very special material characteristics of product uniformity, cleanliness, machinability polishability, strength, toughness, hardenability  and other steel properties. All this from production facilities certified to ISO 9002.

QUALITY ASSURANCE

Ellwood Specialty Steel is committed to providing products and services which will consistently meet or exceed all quality and performance expectations. We will provide customer and technical service that will ensure complete satisfaction.

Being a very flexible integrated producer, Ellwood Specialty Steel will establish product programs to fully support industry or customer requirements. Our extensive stock programs are supported by very short mill lead times of custom forged products. Customized stock programs are and can be available for specific customer needs.

This information is intended to provide general data on our products and their uses and is based on our knowledge at the time of publication. No information should be construed as a guarantee of specific properties of the products described or suitability for a particular application. Ellwood Specialty Steel reserves the right to make changes in practices which may render some information outdated or obsolete. Ellwood Specialty Steel should be consulted for current information and/or capabilities.

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