AISI D2 Tool Steel
AISI D2 Tool Steel Manufacturer and Exporter,supplied with round,square,and flat.AISI D2 Tool Steel is a high-carbon, high-chromium tool steel alloyed with molybdenum and vanadium as per ASTM A 681 standard.It is the most commonly used steel among the group D steels.It has high abrasive wear resistance,high compressive strength ,good through-hardening properties,high stability in hardening and good resistance to tempering-back. AISI D2 is often supplied in annealed condition.
AISI D2 Tool Steel Supply Form & Size & Tolerance
Supply Form | Size(mm) | Process | Tolerance | |
Round | Φ6-Φ100 | Cold Drawn | Bright/Black | Best H11 |
Φ16-Φ350 | Hot Rolled | Black | -0/+1mm | |
Peeled/ground | Best H11 | |||
Φ90-Φ1000 | Hot Forged | Black | -0/+5mm | |
Rough Turned | -0/+3mm | |||
Flat/Square/Block | Thickness :120-800 | Hot Forged | Black | -0/+8mm |
Width:120-1500 | Rough Machined | -0/+3mm |
Remark:Tolerance can be customized as per requests
AISI D2 Tool Steel Chemical Composition per ASTM A681 (Cold Work Tool Steel)
GRADE | C | Si | Mn | P | S | Cr | Mo | V |
D2 | 1.40-1.60 | 0.10-0.60 | 0.10-0.60 | ≤ 0.030 | ≤ 0.030 | 11.00-13.00 | 0.70-1.20 | 0.50-1.10 |
AISI D2 Tool Steel Physical Property
Temperature | 20°C | 200°C | 400°C | |
Melting point | 1421°C | |||
Density ,kg/m3 | 7700 | 7650 | 7600 | |
Modulus of elasticity,Mpa | 210000 | 200000 | 180000 | |
Coefficient of thermal expansion | low temperature tempering per °C from 20°C | – | 12.3 x 10^–6 | – |
high temperature tempering per °C from 20°C | – | 11.2 x 10^–6 | 12 x 10^–6 | |
Thermal conductivity,W/m °C | 20 | 21 | 23 | |
Specific heat,J/kg °C | 460 | – | – |
AISI D2 Tool Steel Mechanical Property
Metric | Imperial | |
Hardness, Knoop (converted from Rockwell C hardness) | 769 | 769 |
Hardness, Rockwell C | 62 | 62 |
Hardness, Vickers | 748 | 748 |
Izod impact unnotched | 77.0 J | 56.8 ft-lb |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Elastic modulus | 190-210 GPa | 27557-30457 ksi |
AISI D2 Tool Steel Copressive Strength
Hardness | Compressive yield strength, Rc 0.2 | |
HRC | Mpa | ksi |
62 | 2200 | 319 |
60 | 2150 | 312 |
55 | 1900 | 276 |
50 | 1650 | 239 |
AISI D2 Tool Steel Forging
Heat the D2 tool steel slowly and uniformly to 700°C then more rapidly to 900-1040°C. Reheat is necessary when temperature is below 900°C.AISI D2 steel should be cooled as slowly as possible in furnace,and annealing is strongly recommended after forged.
AISI D2 Tool Steel Annealing
Annealing must be performed after hot working and before re-hardening. Heat at a rate not exceeding 220°C per hour to 870-900°C, and hold at temperature for 1 hour per inch (25.4mm) of maximum thickness; 2 hours minimum. Then cool slowly with the furnace at a rate not exceeding 20°C per hour to 530°C. Continue cooling to room temperature in the furnace or in air. The resultant hardness should be a maximum of 255 HBW.
AISI D2 Tool Steel Sress Relieving
After rough machining,AISI D2 steel should be heated throughly to 600-650°C, holding time 2 hours. Cool slowly to 500°C, then freely in air.
AISI D2 Tool Steel Hardening
Preheating temperature: 650–750°C.
Austenitizing temperature: 990– 1050°C, but usually 1000–1040°C.
Temperature , °C | Soaking time Min. | Hardness before tempering |
990 | 60 | approx. 63 HRC |
1010 | 45 | approx. 63 HRC |
1030 | 30 | approx. 63 HRC |
Quenching Media
• Oil (Only very simple geometries)
• Vacuum (high speed gas)
• Forced air/gas
• Martempering bath or fluidized bed at 180–500°C, then cooling in air.
AISI D2 Tool Steel Tempering
Temper immediately after quenching. Hold at temperature for 1 hour per inch (25.4 mm) of thickness, 2 hours minimum, then air cool to ambient temperature. The typical tempering range is 180 to 210ºC.Double tempering is recommended.
Temperature ,°C | 150 | 200 | 250 | 300 | 350 | 400 |
Hardness,HRC | 62-61 | 61-60 | 60-59 | 57-56 | 56-55 | 56-55 |
AISI D2 Tool Steel Application
AISI D2 is used in a wide variety of tool making applications.Use D2 for applications requiring long runs and close tolerances. Use it for tools and dies for blanking, punching, forming, cold-extruding, and other operations requiring high compressive strength and excellent wear resistance.
Typical applications includes :Cutting, punching, stamping tools, shear blades, thread rolling dies, cold extrusion dies, drawing and bending tools, flanging and straightening rolls, fine cutting tools, deep drawing tools, plastic moulds for abrasive polymers
Page Contents
- AISI D2 Tool Steel Supply Form & Size & Tolerance
- AISI D2 Tool Steel Chemical Composition per ASTM A681 (Cold Work Tool Steel)
- AISI D2 Tool Steel Physical Property
- AISI D2 Tool Steel Mechanical Property
- AISI D2 Tool Steel Copressive Strength
- AISI D2 Tool Steel Forging
- AISI D2 Tool Steel Annealing
- AISI D2 Tool Steel Hardening
- AISI D2 Tool Steel Tempering
- AISI D2 Tool Steel Application