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Tool Steel Cold Finished Bar AISI H12 High Toughness For Extrusion Industry

China SHANGHAI UNITE STEEL certification
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Tool Steel Cold Finished Bar AISI H12 High Toughness For Extrusion Industry

Tool Steel Cold Finished Bar AISI H12 High Toughness For Extrusion Industry
Tool Steel Cold Finished Bar AISI H12 High Toughness For Extrusion Industry Tool Steel Cold Finished Bar AISI H12 High Toughness For Extrusion Industry

Large Image :  Tool Steel Cold Finished Bar AISI H12 High Toughness For Extrusion Industry

Product Details:
Place of Origin: MAINLAND CHINA
Brand Name: UST
Certification: ISO 9001:2008
Model Number: ASTM H12
Payment & Shipping Terms:
Minimum Order Quantity: 3 Metric tons
Packaging Details: In standard export packing and seaworthy material with rectangular shape bundle, covered with tarpaulin, in ontainers or in bulk, or upon request
Delivery Time: 15-35 days
Payment Terms: L/C, T/T, D/A, D/P
Supply Ability: 1000 Metric Tons per Month
Detailed Product Description
Diameter: 20-1000mm Length: Below 16 Meters
Grade: H12 / 1.2605 / 1.2606 Matrial: Tool Steel
Standard: GB, ASTM, DIN,JIS Techniques: Cold Drawn; Hot Rolled; Cold Rolled; Forged
Surface: Black, Bright, Polished, Peeled, Or Upon Request Processing: Annealed Or Quenched And Tempered Provided
End: Beveled, Plain End As Required Quality Inspection: SGS, BV Etc.
High Light:

tool steel rod


tool steel round bar


AISI H12 / DIN EN X35CrWMoV5 1.2605/1.2606 Tool Steel Bar / Rod 20-1000 mm




For hot works tool steels application, we could supply some common tool steels, like H10 steel, H11 steel and H13 steel, and we could also supply AISI H12 tool steel materials for your hot works applications.


AISI h12 tool steel is a 4.75~5.5% chromium, general-purpose hot work steel. H12 tool steel contains (0.2~0.5%) less vanadium than the widely-used H13 hot works tool steel (0.8~1.2%). ASTM/AISI H12 Steel is a deep-hardening, air-hardening steel that exhibits minimal size change during heat treatmnet. H12 tool steel material has good resistance to thermal fatique cracking (heat cracking) and excellent resistnce to gross cracking and thermal shock when water cooled in service. So, we could say H-12 tool steel mainly has the following characteristics:

  • Excellent resistance to wear, high strength at elevated temperature.
  • Good homogenizing with high toughness.
  • Extra- fine- structure without grain-boundary carbide.
  • Inclusion shape controlled with high cleanliness.




AISI H12 hot work tool steel is usually used for hot tooling applications where maximum resistance to cracking is required. Such typical applications include the following:

  • Extrusion indushry: dies and inner liner for extrusion, extrusion tools
  • Forging Industry: forming dies, press dies
  • Die casting industry: dies for die-carbide
  • Tool Industry: hot punch, hot shear blades, immediate roller for cold rolling

Steel Grade 1.2605 / 1.2606 Application Tool steel, Mold Steel
Shape Round Bar Standard GB, ASTM, DIN,JIS
Dimension Φ20-1000 mm; length below 16m Surface Black, Bright, Polished, Peeled
Technique Cold drawn; Hot rolled; Forged Ultrasonic Test 100% UT Passed




  Diameter (mm)
Cold drawn 10-100
Peeled 30-160
Grinded 10-600
Turned 130-1600
Hot Rolled 20-280
Hot Forged 130-1000



-HOT rolled; Cold rolled; Forged; Cold Drawn

-Heat Treatment: Untreated, Annealing, N+T, Q+T

-Smelting: EAF+LF+VD (+ESR)

-Surface Finish: Black, Rough Machined, Peeled, Turned or as per given requirements

-UT 100% passed

-Cutting service provided

-Third Party inspection is acceptable (SGS, BV etc.)




H12/T20812 1.2605/1.2606 SKD62 4Cr5W2VSi




C Si Mn P S Cr Mo V W



















  • Modulus of elasticity [103 x N/mm2]: 207
  • Density [g/cm3]: 7.84
  • Thermal conductivity [W/m.K]: 18.9

Coefficient of Linear Thermal Expansion 10-6 oC-1


20-100oC 20-200oC 20-400oC 20-600oC
9.8 11 12.1 13




Forging of AISI H12 Tool Steel


Hot forming temperature: 1100-850oC.



AISI H12 Tool Steel Heat Treatment




Heating Steel H-12 slowly and uniformly to 845~900℃, furnace cooling to 540℃ at a rate 10~20℃/hr. Hardness HB 229 max


Stress Relieving

Stress relieving to remove machining stresses should be carried out by heating H12 steel to approx.650oC, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.



  • Preheating (1): Heat H-12 steel to approx. 540~650℃, holding 30 minutes per 25mm.
  • Preheating (2): Heat H12 tool steels to approx. 845~870℃, holding 30 minutes per 25mm.
  • Austenitizing: Heat steel H12 to approx. 1010~1050℃, holding 30 minutes per 25 mm.
  • Quenchant: By oil or air.


Tempering temperature: 520-700oC, hold at least 2 hours, air cooling and double tempering.


Tool Steel Cold Finished Bar AISI H12 High Toughness For Extrusion Industry 0


What we can offer?

-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.

-Machining and heat treatment are available.

-Also, we advise you in choosing the right materials.


Shape Available

  • Solid round bar
  • Flat bar
  • Square bar
  • Hexagon bar
  • Block
  • Plate
  • Sheet
  • Wire rod
  • Strip


Our Advantages

  • High mechanical property and quenching, enable the surface share equal hardness after deal with it
  • Good polishing and low roughness
  • Making the heat-treatment to harden condition before using it
  • Competitive price
  • Fast production lead-time
  • All the material are inspected with 3 times to meet the highly standards
  • Pure steel quality & stable quality to be guarantee



Tool Steel Cold Finished Bar AISI H12 High Toughness For Extrusion Industry 1



Available Size:
-Round: Dia. 20-1000 mm
-Flat: T. 10-120 mm x W. 60-810 mm
-Block: T. 80-1200 mm x W. 100-1600 mm




1. Both T/T and L/C will be acceptable

2. Trade Terms: FOB, CIF, CFR

3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties

4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples




Shanghai Unite Steel Trading Co., Ltd

We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.

What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!




Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.

Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.

Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material doesn't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.

Q: What is the payment term?
A: T/T or L/C.

Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.

Contact Details

Contact Person: Neya

Tel: +8615261689453

Send your inquiry directly to us (0 / 3000)