Quick Details

  • Grade: alloy steel
  • Standard: AISI, DIN, GB, JIS
  • Thickness: 20mm~400mm
  • Width: 105mm~710mm
  • Length: usually 2000mm~5800mm or customized
  • Place of Origin: Hubei, China (Mainland)
  • Brand Name: HUAYU
  • Model Number: 4340/1.6582/SNCM8,EN24,817M40
  • Application: tool steel
  • Technique: Forged
  • Special Use: Mold Steel
  • delivery surface: black surface or milled in four faces
  • application: die steel , tool steel
  • market: America,Europe,Asia
  • selling point: high quality,customized
  • service: OEM/ODM
  • MOQ: 5 tons
  • certificate: Ultrasonic test ,ISO9001:2008
  • quality: quality assurance
  • smelting: ESR ,EAF
  • standard: AISI, DIN ,JIS

Packaging & Delivery

Packaging Details: seaworthy packaging
Delivery Detail: 30 days or depend on the quantity

Specifications

1.tool steel EN24 /817M40 steel blocks
2.Certification: ISO 9001:2008
3.Quality assurance
4.Manufacturer,UT% before delivery

1.tool steel EN24 /817M40 steel blocks  

 

AISI 4340 /DIN 34CrNiMo6,1.6582/ JIS SNCM 8 ,EN24 ,817M40 steel square bar

 

2. Composition:

 

Element

C

Mn

P

S

Si

Cr

Ni

Mo

Weight %

0.36-

0.44

 

0.50-

0.80

 

0.015 (max)

0.025 (max)

0.17-

0.37

 

0.60-

0.90

1.25-

1.75

0.15-

0.25

 

 

3. Applications
Typical applications are for structural use, such as aircraft landing gear, power transmission gears and shafts and other structural parts, general engineering parts, hrough-hardened gears, connecting rods and bolts, gun barrels.

4.Normalizing
Normalizing temperature: 850-880oC.

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

6.Hardening
Harden from a temperature of 830-860oC followed by oil quenching. Qenching temperature in the end-quench test is 850oC.

7.Tempering
Tempering temperature: 540-660oC.

8.EN24 material :the tempering temperature can be "tempered to the desired hardness".

 

6.Condition of delivery: in black or milled in four faces

 

7.Quality assurance:

We are the ISO 9001:2008 authentication enterprises and we can provide the enterprise's quality written guarantee for all the exported products.

 

 

 

 

8.Our smelting facilities data as following:

45 tons EBT, 50 tons EF, 50 tons VOD

Forging equipment :a 3200 tons pressing machine , a 2000 tons pressing machine, a 1000 tons pressing machine, a 8 tons Hydraulic hammer, a 3 tons Hydraulic hammer

Processing equipment:  8 of gantry millings, 12 of lathe machines etc.

 

9.Test and inspection: 100% mixed test

100% crack test,defect depth max.1% of diameter(turned, peeled) or width

100% US test acc. to SEP standard.

 

 

 

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