Seamless Steel Pipe DIN 2391

Steel Grade

Chemical Analysis  %

Grade

Material NO.

C max.

Si max.

Mn

P max.

S max.

St 30 Si

1.0211

0.1

0.3

≤0.55

0.025

0.025

St 30 Al

1.0212

0.1

0.05

≤0.55

0.025

0.025

St 35

1.0305

0.17

0.35

≥0.40

0.025

0.025

St 45

1.0408

0.21

0.35

≥0.40

0.025

0.025

St 52

1.058

0.22

0.55

≤1.60

0.025

0.025

Can join the alloy elements: Nb:≤0.03%;Ti:≤0.03%;V:≤0.05%;Nb+Ti+V:≤0.05%

          Delivery State

BK

BKW

BKS

GBK

NSK

Grade

Grade

Material NO.

Tensile Strength

(N/mm2)

Min.

Elongation

%

Min.

Tensile Strength

(N/mm2)

Min.

Elongation

%

Min.

Tensile Strength

(N/mm2)

Min.

Yield Strength

 (N/mm2)

min.

Elongation

%

Min.

Tensile Strength

(N/mm2)

Min.

Elongation

%

Min.

Tensile Strength

(N/mm2)

Min.

Yield Strength

 (N/mm2)

min.

Elongation

%

Min.

St 30 Si

1.0211

430

8

380

12

380

280

15

280

30

290-420

215

30

St 30 Al

1.0212

430

8

380

12

380

280

15

280

30

290-420

215

30

St 35

1.0305

480

6

420

10

420

315

14

315

25

340-470

235

25

St 45

1.0408

580

5

520

8

520

375

12

390

21

440-570

255

21

St 52

1.058

640

4

580

7

580

420

10

490

22

490-630

355

22