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st52 pipe manufacturers in india

What is St52, St52.3, St52.4 Seamless Pipe?

American steel grade German steel St52

The “St” means a general structural carbon steel (that is, plain carbon rather than low alloy) which is not intended to be heat treated (that is, other than the heat treatment which naturally occurs during cool-down from the hot-rolling operation).The “52” means a minimum tensile strength of 52 kg per sq. mm. In SI units, this is 510 MPa. In Imperial units, it’s 73,961 (that is, in practice, 74,000 or 75,000) psi.

St52, St52.3, St52.4 Seamless Pipe Specification

Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

Processing mode
Diameter
Length
Linearity
Precision
Roughness of inner hole
Cold rolling
30-100
≤ 12M
0.3-1.0
H8-H10
0.4-1.6
Cold drawn
30-250
≤ 12M
H8-H10
0.8-1.6
Grinding
40-500
≤ 12M
1000
H8-H9
0.4-0.8
Rolling
40-400
≤ 7M
H8
0.4
Pipe
Tolerances
Hot Rolled(extrude,expansion)
+/- 1% D or 0.50,choose the larger one
Cold Drawn(Rolled)
+/- 1% D or 0.30,choose the larger one
A St 52 steel / St52, St52.3, St52.4 Seamless Pipe chemical composition:
A St 52 Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

Al(min)

N

 A St 52

0.20

0.50

0.9-1.70

0.03

0.025

0.02

Cr

Cu

Mo

Nb

Ni

Ti

V

0.30

0.30

0.08

0.005

0.50

0.03

0.10

A St 52 steel /St52, St52.3, St52.4 Seamless Pipe mechanical property:

Grade

 A St 52 Mechanical Property

Thickness

Yield

Tensilmie

Elongation

Impact Energy(KV J) min

 A St 52

mm

Min Mpa

Mpa

Min  %

-20°

+20°

≤ 16

355

490-630

22

40

47

55

16> to ≤35

355

490-630

22

40

47

55

35> to ≤50

345

490-630

22

40

47

55

50> to ≤70

325

490-630

22

40

47

55

70> to ≤100

315

470-610

21

40

47

55

100> to ≤150

295

450-590

21

40

47

55

Nitron Alloys Overseas
ADDRESS : 65/73, Habib Building, 3rd Floor, Office NO:- 41, 2nd Panjrapole Lane, C.P Tank Road, Mumbai
EMAIL   : exports@nitronalloys.com
PHONE : +91 22 66394868
MOBILE :  +91-9819903231
CONTACT PERSON : Akshay Jain(Export Department)

http://www.nitronalloys.com/st52-seamless-pipe-manufacturers-suppliers/

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