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Your present location:Home >> Products >> Alloy Tool Steel >> 4340,1.6582 >> Rolled flat bar 40CrNiMo/4340/1.6582
  • Product Name: Rolled flat bar 40CrNiMo/4340/...
  • Product ID: 5102
  • Views : 5071

Chemical composition%

 

Standard

Steel Grade

C

Si

Mn

P

S

Cr

Mo

V

W

DIN

1.3355

0.70-0.78

≤0.45

≤0.40

0.030

0.030

3.80-4.50

-

1.00-1.20

17.50-18.50

ASTM

T1

0.65-0.80

0.20-0.40

0.10-0.40

0.030

0.030

3.75-4.50

-

0.90-1.30

17.25-18.25

GB

W18Cr4V

0.70-0.80

0.20-0.40

0.10-0.40

0.030

0.030

3.80-4.40

<0.30

1.00-1.40

17.50-19.00

 Specification

 

Round bar

Diameter

Length

-

Forged round bar:φ50~450

2000~6000

-

 Rolled round barφ10~80

 2000~6000

-

Flat bar

Thickness(mm)

Width(mm)

Length(mm)

Forged plate20~300

50~710

2000~6000

Rolled plate10~65

155~610

2000~6000

DIN              AISI                 JIS                    GB            

1.3355                   T1           SKH2         W18Cr4V

 

Steel Properties                                                                                                                                

Tungsten high speed tool steel.Very high resistance to softening and to ware.Good toughness and cutting capability.Deep hardening response.

Applications    

Turning,planing and slotting tools,taps,spiral drills,threading dies,profile cutting tools,broaching tools,reamers.    

Heat Treatment      

 

Soft Annealing(℃)

Cooling

Hardness(HB)

Hardening()

Preheating / In

Tempering

820-880

Furnace

230-300

450-600

850℃,then 1050℃

3*1h 550-570,then min.64-66 HRC

1250-1290

Oil,thermal bath 550

                                                       

 

Tempering(℃)

200

300

400

500

525

600

650

700

HRC

64

62

62

64

65

63

56

47