Non-ferrous Metal
ST52 / S355JR Rolled Steel Tube , Automobile High Precision Cold Rolled Pipe
OD: 10-150mm; WT: 2-25mm
Description
ST52/S355JR high precision?cold rolled steel tube for automobile, OD: 10-150mm; WT: 2-25mm
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Cold drawn seamless has closer dimensional tolerances, better surface finish and higher mechanical properties than corresponding grades of hot finished seamless.
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Application:
High Precision Cold Rolled Seamless Steel Tube is used in automotive industry, and in the occasion where the high accuracy, brightness, cleanness of the tube are required.
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Quality Standards:
DIN 2391 Seamless Precison Steel Tubes
BS6323 Specification for Seamless and Welded Steel Tubes for Automobile, Mechanical and General Engineering Purposes
ASTM A519 Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing
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Steel Grades:
DIN Standard: St35, St52
BS Standard: CFS 4, CFS 5, CFS 10
ASTM Standard: 1020, 1045, 4130
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Size Range:
Outer Diameter: 10-150 mm
Wall Thickness: 2-25 mm
Length Random Length, Fixed Length, etc.
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Dimension tolerance:
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I.D tolerance (mm) | O.D tolerance (mm) | I.D Roughness (μm) | Straightness (mm/meter) |
H7-H9 | -/+0.5% | 0.10-0.80 | 0.2-0.80 |
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Chemical composition(%):
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Grade | C | Si | Mn | P | S | Cr | Mo |
ST35 | 0.17 max | 0.35 max | 0.40 max | 0.025 max | 0.025 max | / | / |
ST42 | 0.21 max | 0.35 max | 0.40 max | 0.025 max | 0.025 max | / | / |
ST52 (DIN1.0580) | 0.22 max | 0.55 max | 1.60 max | 0.025 max | 0.025 max | / | / |
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Delivery Conditions:
+C (BK) Hard. No final treatment after final cold rolling.
+LC (BKW) Soft. Final heat treatment is followed by a suitable drawing pass (limited reduction of area).
+SR (BKS) Stress Relieved. After final cold rolling, the tubes are stress relieved in a controlled atmosphere.
+A (GBK) Annealed. After final cold rolling, the tubes are annealed in a controlled atmosphere.
+N (NBK) Normalized. After final cold rolling, the tubes are normalized in a controlled atmosphere.
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Mechanical Properties( T=20°C if not differently stated ):
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Grades | Delivery Conditions | Tensile Strength Rm (Mpa) | Yield Strength R2 (Mpa) | Elongation in the longitudinal direction Al (%) |
St 52 | +C (BK) | 640 min | / | 4 min |
St 52 | +LC (BKW) | 580 min | / | 7 min |
St 52 | +SR (BKS) | 580 min | 420 min | 10 min |
St 52 | +A (GBK) | 490 min | / | 22 min |
St 52 | +N (NBK) | 490-630 | 355 min | 22 min |
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Our Services
Third Party inspection acceptable. such as SGS, BV etc.
Supplying financial support with usance L/C 180 days after B/L date.
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Please feel free to contact us again if you have any further questions. We look forward to receiving an order from you.
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SHANGHAI UNITE STEEL TRADING CO., LTD
Hydraulic Cylinder Steel Tube,Cold Drawn Steel Tube,Cold Rolled Steel Tube聽
Address: Room 1109, Loft Office, Green Land International Plaza, No. 275-8 Guoding East Road, Shanghai 200433, P.R. China,
Shanghai, Shanghai
China, 200000
Tel: 86-21-35316960
Fax: 86-21-35316961
