2714
Download 2714 Spec sheetExELL™ 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, ExELL™2714 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
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
CAPABILITIES
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.
