SKD12 / 1.2631/A8 High Tensile Alloy Special Tool DIe Steel Flat Bar

Model NO.
SKD12, A8, 1.2631
Quality Assurance
100% UT passed
Heat Treatment
Delivery Time
Payment Terms
free sample
Transport Package
Standard /Customized
HS Code
"Sincerity, Innovation, Rigorousness, and Efficiency" is the persistent conception of our company for the long-term to develop together with customers for mutual reciprocity and mutual benefit for SKD12 / 1.2631/A8 High Tensile Alloy Special Tool DIe Steel Flat Bar, The product will supply to all over the world, such as: Madagascar, Kyrgyzstan, Israel, We focus on providing service for our clients as a key element in strengthening our long-term relationships. Our continual availability of high grade products in combination with our excellent pre-sale and after-sales service ensures strong competitiveness in an increasingly globalized market.
Guangzhou Changfeng Steel Co., Ltd. Diamond / Audited Supplier
SKD12 / 1.2631/A8 High Tensile Alloy Special Tool DIe Steel Flat Bar
Standard: JIS G4404:2000
Similar grade: A2, BA2, 2231Z100CDV5
Heat treatment hardness: 58-61HRC

SKD12 case of air quenching tool steel with deep air-hardening properties, which requires tempering after quenching quenching and tempering must maintain its 
complex shape of the mold is extremely useful. 

The air quenching of steel due to the deformation caused by manganese-based oil is only about 1/4 of quenching tool steel, the wear resistance between manganese oxide and high carbon high chromium tool steel, toughness better than any one particular It requires suitable for good wear resistance but also has good toughness, special tools, widely used in die cutting and forming dies, roll, punch, rolling dies and thread rolling dies, but also for certain types of scissors sheet.


This is alloy mould steel with medium Alloy content ,due to contain molybdenum and vanadium, so that it has good hardenability, 

SKD12 Steel has good impact toughness and good wear resistance cause to uniform distribution of carbide, 

Good Air quenching performance

Small quenching deformation

Toughness is better than 9Mn2V,Cr12

Uniform and fine carbide, good wear resistance


Air quenching mould steel has excellent air quenching hardening

Good wear resistance performance

Micro deformation

High hardenability

High compressive strength 

Annealing:1,800-850oC, slow cooling  2,Spheroidizing

Quenching:940-960oC, air cooling

Tempering:180-220oC, air cooling  HRc=60-64 510-520oC, air cooing  HRc=57-60
Spheroidizing HB≤230


Widely suitable for Large and complex for a variety of hardware Die, and bear a greater impact load punch die.
For bending carbon content of 0.65% to 0.80% of the leaf spring that the hardness 37~42HRC, service life up to 11~12w times.
For bending carbon content of 0.65%~0.80%spring steel plate that the hardness 37~42HRC, And then add nitriding treatment, life expectancy of up to 40 million times. 

The steel can be used for thread rolling die can be used for processing aluminum and copper alloys

Stretch film, embossing dies, die cutting, stamping die.

Chemical composition%

C Mn Si Cr P S Mo V
0.95~1.05 1.00 0.50 4.75~5.50 0.025 0.020 0.90~1.40 0.15~0.50

Manufacturing process
EF→LF→VD→Argon gas protection casting ingot→Multidirectional forging→Normalizing→Annealing heat treatment→UT→Quenching→Tempering pre-hardening heat treatment→Product testing


Standard packing

Company Profile
Guangzhou Changfeng Steel Co.,LTD is an export agent company of Baosteel Group special steel products, which mainly sells plastic die steel, hot work die steel, cold work die steel, alloy structural steel, bearing steel, tool steel, stainless teel, carbon steel, etc. We also act on behalf of exporting steels of mainly steel factories in China, including Shagang group, Wenfeng group, Xingcheng group, Dongte group, Daye and so on. Changfeng is full of export experience to the market all over the world, such as America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.
Changfeng has a lot of experienced and competent elites and is capable of offering the best service after years of development. Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machines and other advanced equipments to provide customers with cutting and other processing services. Our all products should be inspected the metallographic analysis,hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI,JIS and GB to ensure their function and quality.
Changfeng keeps the principle of ” sincerely cooperation, endless striving for perfection” to establish long-term and win-win relationship with importers all over the world.

Why choose us?

Quality Assurance from government owned steel mills
At die & tool steel , we meticulously source materials only from steel manufacturers to ensure consistency in providing the finest quality steel products for our customers.
Being in the competitive market today, we clearly understand that customers are looking for products that are not only best in class but also affordably priced. We are confident that we are able to ful fil these two equally vital aspects -our customers continuous support over the past two decades is the most heartfelt recognition to us.
Speedy and Timely Delivery
Knowing that delivering goods to customers hands on time is as important as providing quality goods, we treat every business transaction as a priority. Be it a raw material or a finished material with machining or heat treatment, every effort will be made to get your purchase order to you in the shortest lead time.
Quality Commitment
In order to realise competitive products to fulfil our customers demands and quality considerations, our integrated quality and work management system is continuously being improved and developed further. We document this for our customers by having our quality management system certified in accordance with ISO 9001. This measure is accompanied by audits and  recertifications on a regularly prescribed basis.

Our service
We provide quality special steel in stock for all industries.
Orders of any size, any length, ship fast
Provide related value-adding services :
metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment.
Sawing for small or large quantities, sawing-to-size.
We dont just sell steel, but we provide you integrated solutions for all your steel needs

Quality Inspection

Contact Us
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