Air-hardening A8 Mod Cold Work Tool Steel Plates Bars Sheet Forgings
Product Details
A8 is an air-hardening cold work tool steel. It exhibits good wearing qualities with excellent toughness characteristics. It is well suited for many metals working dies and punches, which operate in the hardness of Rockwell C 55-60.
Applications:Punches, drift pins, pneumatic tools, chuck jaws, hammers, hot rolls, and hot and cold shear knives.
Quality Standard:ASTM A681 – 08 Standard Specification for Tool Steels Alloy.
Website:
Chemical Composition(%)
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
HEAT TREATMENT
Preheating: Heat at a rate not exceeding 400°F per hour to 1400-1450°F and equalize.
Austenitizing: Heat slowly from the preheat. Furnace or Salt: 1825-1850°F. Soak for 30 minutes for the first inch of thickness, plus 15 minutes for each additional inch.
Annealing: Annealing must be performed after hot working and before rehardening.
Heat at a rate not exceeding 400°F per hour to 1550°F, and hold at temperature for 1 hour per inch of maximum thickness; 2 hours minimum. Then cool slowly with the furnace at a rate not exceeding 50°F per hour to 1000°F. Continue cooling to ambient temperature in the furnace or in air. The resultant hardness should be a maximum of 241 HBW.
Hardening: Air, pressurized gas, or interrupted oil to 150-125°F.
special steel supplier:
Note: Sizes over 5 inches in cross section may not achieve full hardness by cooling in still air. It is usually necessary to increase the quench cooling rate between 1400 to 900°F by using an air blast, pressurized gas, or an interrupted oil quench. For the oil quench, quench until black, about 900°F, then cool in still air to 150-125°F.
Tempering: Temper immediately after quenching. Hold temperature for 1 hour per inch of thickness, 2 hours minimum, then air cool to ambient temperature. The typical tempering range is 300 to 600°F. Double tempering is recommended for tempering temperatures of 900°F and higher.
To minimize internal stresses in cross sections greater than 6 inches and to improve stability in tools that will be EDM’d after heat treatment, a soaking time of 4 to 6 hours at the tempering temperature is strongly recommended.
,based on the over one hundred years’s production history of in Huangshi, provide professional services and material for cutting tool companies, mould companies and other industrial enterprises all over the world for years.
在线联系供应商
Other supplier products
 |
High toughness H13 1.2344 SKD61 Hot Work Tool Steel | Product Details Chemical Composition (%) Standard Steel Grade C Si Mn P S Cr Mo V W DIN - ASTM H13 ... |
|
|
Air-hardening A8 Mod Cold Work Tool Steel Plates Bars Sheet Forgings | Product Details A8 is an air-hardening cold work tool steel. It exhibits good wearing qualities with excellent toughness characteristics. It is we... |
 |
1.2316/3Cr17Mo Plastic Mold Tool Steel Plates Bars Sheet Forgings | Product Details Specification Round bar Diameter(mm) Length(mm) - Forged round bar：φ50~450 2000~6000 - Rolled round bar：&... |
 |
M2/1.3343 High Speed Tool Steel Plates/Bars/Sheet /Forgings | Molybdenum high speed tool steel. Very high resistance to softening at elevated temperatures. Very high resistance to wear. Good toughness and cut... |
 |
45CrNi4Mo/1.2767 Hot Work Tool Steel Plates Bars Sheet Forgings | Product Details Chemical composition C Mn Si Cr V Mo P S - ≤0.03 ≤0.03 Equivalent grades: DIN AFNO... |
Same products
 |
Cleaning Agent | 卖方: Foshan Jiwei New Material Co.,Ltd | Cleaning Agent PUR cleaning agentis a specialized solution designed for effectively removing pol... |
 |
3D Laminating Water-Based Polyurethane Adhesive | 卖方: Foshan Jiwei New Material Co.,Ltd | 3D Laminating Water-Based Polyurethane Adhesive 3D laminating water-based polyurethane adhesivei... |
 |
Liquild PUR Adhesive | 卖方: Foshan Jiwei New Material Co.,Ltd | Liquild PUR Adhesive PUR adhesive, also known as polyurethane reactive adhesive or polyurethane ... |
 |
PUR for Edge Banding | 卖方: Foshan Jiwei New Material Co.,Ltd | PUR for Edge Banding Edge banding adhesiveis a type of glue used in furniture manufacturing and ... |
 |
PUR for Flat Lamination | 卖方: Foshan Jiwei New Material Co.,Ltd | PUR for Flat Lamination Our PUR (Polyurethane Reactive) adhesive is specially formulated for fla... |
