Home > Products > Hot Work Tool Steel > Air Cooling Hardened Hot Work Tool Steel , 1.2344 Heat Treat Tool Steel
Air Cooling Hardened Hot Work Tool Steel , 1.2344 Heat Treat Tool Steel
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Product Details
Brand Name: | NFCase | Place of Origin: | China | Model Number: | AIA-1 |
Product Description
Certification:CE,FCC,MSDS
DIN 1.2344 Flat Bar Hot Work Tool Steel for Hot Forging or Die Casting Mold
Steel Grade: |
1.2344 |
Application: |
Die Steel, Mould Steel |
Shape: |
Flat bar |
Standard: |
AISI, DIN, JIS, GB |
Dimension: |
6-400 mm x 60-1500 mm |
Surface: |
Black, Machined |
Technique: |
Hot rolled, Forged |
Ultrasonic Test: |
100% UT Passed |
Description:
◆ Equivalence
AISI / SAE |
DIN / W.Nr |
JIS |
GB |
H13 |
1.2344 |
SKD61 |
4Cr5MoSiV1 |
◆ Chemical Composition (%)
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
0.35 0.42 |
0.80 1.20 |
0.25 0.50 |
≤ 0.030 |
≤ 0.020 |
4.80 5.50 |
1.20 1.50 |
0.85 1.15 |
◆ Dimensions
Hot Rolled |
Forged |
|
Thickness (mm) |
6-120 |
60-400 |
Width (mm) |
100-810 |
60-1500 |
Length (mm) |
2000-5800 |
2000-5800 |
◆ Delivery Condition
EAF+(ESR) or EAF+LF+VD+(ESR), Hot rolled or Forged, Annealed, Hardness≤235HB,
Black surface or Machined surface, UT 100% Passed
◆ Characteristics
1. Air cooling hardened hot work tool steel, most widely used.
2. High toughness Good cold & thermal fatigue resistance.
3. Small distortion, deformation and oxide skin after heat treatment during air cooling.
4. Good resistance from the undermining of fusing Aluminum.
◆ Applications
1. For making aluminum and copper alloy die casting mold when die cavity temperature
is below 600℃
2. For making forging die, forging press mold, mold hammer block for fine forging
machine uses.
◆ Forging Technique
Heat Temperature |
Start Forging Temperature |
Finish Forging Temperature |
Cooling Method |
1120-1150 °C |
1050-1100 °C |
900-850 °C |
Pit or Sand Cooling |
◆ Heat Treatment
Annealing |
750 to 800°C (1382 to 1472°F)
Slow controlled cooling in furnace at a rate of 10 to 20°C/hr (50 to 68°F/hr) down to
approx. 600°C (1112°F), further cooling in air.
Hardness after annealing: max. 235 HB.
Stress relieving |
600 to 650°C (1112 to 1202°F)
Slow cooling in furnace; intended to relieve stresses set up by extensive machining,
or in complex shapes.
After through heating, hold in neutral atmosphere for 1 - 2 hours.
Hardening |
1020 to 1080°C (1868 to 1976°F)
Oil, salt bath (500 - 550°C / 932-1022°F), air
Holding time after temperature equalization: 15 to 30 minutes.
Obtainable hardness:
52 - 56 HRC in oil or salt bath,
50 - 54 HRC in air.
Tempering |
Slow heating to tempering temperature immediately after hardening / time in furnace
1 hour for each 20 mm of work piece thickness, but at least 2 hours / cooling in air.
It is recommended to temper at least twice.
A third te
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