HONED SEAMLESS TUBE

Grade:ST 52,stainless steel, alloy steel, and special steel
Size range: 
Inside diameter: from 40 to 1000mm, 
Max length:20 meters. 

Straightness: 0.5 /1000
Tolerance EXT: DIN 2391 
Tolerance INT: ISO H7, H8, H9 
Roughness(Ra): max 0.4µ 
Impact test: -20℃, 27 J (only for special requirement) 

Type:cold drawing, normalizing treatment, honing. 

ST 52 CHEMICAL COMPOSITION (%) 

Si

(Max)

Mn

(Max)

C

(Max)

P

(Max)

S

(Max)

0.55

1.6

0.22

0.025

0.025

MECHANICAL PROPERTIES (%)

Tensile strength Min

Yield Point Min

Elongation Min

580 N/mm²

420 N/mm²

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