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Product name : DIN2391 Precision seamless steel tube
Item : 201467212013
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Quick Detail:

DIN2391 Precision seamless steel tubes

Standard: DIN2391-1, DIN2391-2

Grade: ST35, ST37, ST45, ST52,ST35.2,ST52.2

OD。 Range:6mm – 114。3mm

Wall thickness: 1mm-15mm 

Length: Max length 12M

Type: Seamless 

Packaging detail: Bundles with plastic paper packaged or wooden box package

Delivery date: 10-30days

Description:

Precision steel tubes 

To be used in hydraulic system, automobile and precision machinery parts  for cars and cylinder。 

Standard: DIN2391-1, DIN2391-2

Grade: ST35, ST37, ST45, ST52,ST35。2,ST52。2

OD. Range:6mm – 114.3mm

Wall thickness: 1mm-15mm 

Length: Max length 12M

Type: Seamless 

Packaging detail: Bundles with plastic paper packaged or wooden box package

Delivery status: BK(+C), BKS(+SR), BKW(+LC), GBK(+A), NBK(+N)

Applications:

hydraulic system

automobile

precision machinery parts  for cars and cylinder。 

Specifications:

Grade and Chemical Composition (  )

Item

Grade

 

C

max

Mn

P

max

S

max

Si

max

St35

1.0308

0.17

0..4

0.025

0。025

0.35

St45

1.0408

0。21

0.4

0.025

0.025

0.35

St52

1.0508

0.22

1.6

0。025

0.025

0。55

Mechanical properties

item

grade

Cold finished (Hard)

(BK)

Cold finished

(Soft)

(BKW)

Cold finished and stress-relieved

(BKS)

Annealed (GBK)

Normalized

(NBK)

Rm

A

Rm

A

Rm

ReH

A

Rm

A

Rm

ReH

A

MPa

MPa

MPa

MPa

MPa

MPa

1

ST35

480

6

420

10

420

315

14

315

25

340-470

235

25

2

ST45

580

5

520

8

520

375

12

390

21

440-570

255

21

3

ST52

640

4

580

7

580

450

10

450

22

490-630

355

22


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