Standard: DIN 2391-1/EN 10305-1 Application: For Auto use, machinery use, Oil cylinder tube, Motorcycle shock reducer steel tubes, Auto shock reducer inner cylinder Size(mm): O. D.: 6.0-224.0 W. T.: 1-15 L: Max 12000 Delivery condition: Hot rolled, Cold worked, Annealed, Normalized, Stress Released Certificate: ISO9001 TUV Packing: 1. Standard export bundle wrapped with strong steel strip 2. Wooden case 3. Nylon packed Payment: T/T Delivery: With 40 days of order confirmation Your special requirement is highly welcomed and will be fulfilled. We always provide highest quality seamless pipe/tube and best service.

DIN 2391 seamless steel tube

DIN 2391 seamless steel tube

Grade Chemical Composition ( % )
C max Si max Mn P max S max
St 35 0.17 0.35 ≥ 0.40 0.025 0.025
St 45 0.21 0.35 ≥ 0.40 0.025 0.025
St 52 0.22 0.55 ≤ 1.60 0.025 0.025
Steel grade Chemical Composition ( % )
Steel name Steel number C max Si max Mn P max S max Al min
E215 1.0212 0.10 0.05 0.70 0.025 0.025 0.025
E235 1.0308 0.17 0.35 1.20 0.025 0.025 -
E355 1.0580 0.22 0.55 1.60 0.025 0.025 -
Mechanical Properties (Mpa):
Steel grade cold drawing lucency hardness BK cold drawing lucency hardness BKW drawing lucency stress free anneal BKS Anneal GBK Normalization NBK
Tensile Strength Rm N/mm min Elongation % min Tensile Strength Rm N/mm min Elongation % min Tensile Strength Rm N/mm min Yield Strength ReH N/mm min Elongation % min Tensile Strength Rm N/mm min Elongation % min Tensile Strength Rm N/mm min Yield Strength ReH N/mm min Elongation % min
St35 480 6 420 10 420 315 14 315 25 340-470 235 25
St45 580 5 520 8 520 375 12 390 21 440-570 235 21
St52 640 4 580 7 580 420 10 490 22 490-630 355 22
Steel grade Minimum values for the delivery condition
Steel name Steel number + C + LC + SR + A + N
Rm Mpa A% Rm Mpa A% Rm Mpa ReH Mpa A% ReH Mpa A% Rm Mpa ReH Mpa A%
E215 1.0212 430 8 380 12 380 280 16 280 30 290-430 215 30
E235 1.0308 480 6 420 10 420 350 16 315 25 340-480 235 25
E355 1.0580 640 4 580 7 580 450 10 450 22 490-630 355 22

 

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