Specifications

We have precision coled rolled mill 20 sets,St 37.4 (10# Carbon Steel)St 45 (20# Carbon Steel)Ck 45 (45# Carbon Steel)St 52 ( 16

       Our carbon steel tube are mainly used for Motorcycle,Automobile shock absorber, electric motor Gear and shell,oil pipe ,Jack ,Fitness equippment and all application gas spring.

    Material: St 37.4 (10# Carbon Steel)St 45 (20# Carbon Steel)Ck 45 (45# Carbon Steel)St 52 ( 16 Mn Alloy carbon Steel)ASTM 106B, 106, 106gr.Other material according to your special demand

    

DIN 2391 Mechanical properties

The final delivery condition Cold drawn(Mandatory) BK1 Cold drawn(Soft) BKW1 Cold Drawn and Stress Release (BKS) Anneal (GBK)1 Normalizing (NBK)1 Kinds of Steel   Tensile Elongation Tensile Elongation Tensile Yield point Elongation Tensile Elongation Tensile Yield point Elongation Steel grade Material number   No less than Rm A5 Rm A5 Rm ReH A5 Rm A5 Rm ReH2) A5       N/mm2 % N/mm2 % N/mm2 N/mm2 % N/mm2 % N/mm2 N/mm2 % St35 1.0308   -- -- -- -- -- -- -- -- -- 340~470 235 25 St37.4 1.0255   480 6 420 10 420 315 14 315 25 350~480 235 25 St45 1.0408   580 5 520 8 520 375 12 390 21 440~570 255 21 St52 1.0580   640 4 580 7 580 420 10 490 22 490~630 355 22 St52.4 1.0581   -- -- -- -- -- -- -- -- -- 500~650 355 21

EN 10305-1 Mechanical properties

The final delivery condition Cold drawn (Mandatory) +C Cold drawn (Soft)+LC Cold Drawn and Stress Release (+SR) Anneal (+A) Normalizing (+N)       Tensile Elongation Tensile Elongation Tensile Yield point Elongation Tensile Elongation Tensile Yield point Elongation Steel grade Material number   No less than Rm A5 Rm A5 Rm ReH A5 Rm A5 Rm ReH2) A5       N/mm2 % N/mm2 % N/mm2 N/mm2 % N/mm2 % N/mm2 N/mm2 % E235 1.0308   480 6 420 10 420 350 16 315 25 340~480 235 25 E255 1.0408   580 5 520 8 520 375 12 390 21 440~570 255 21 E355 1.0580   640 4 580 7 580 450 10 450 22 490~630 355 22

GB3639 Mechanical properties

The final delivery condition Cold drawn (Mandatory) BK1 Cold drawn (Soft) BKW1 Cold Drawn and Stress Release (BKS) Anneal (GBK)1 Normalizing (NBK)1     Tensile Elongation Tensile Elongation Tensile Elongation Tensile Elongation Tensile Yield point Elongation Steel grade   No less than Rm A5 Rm A5 Rm A5 Rm A5 Rm ReH2) A5     N/mm2 % N/mm2 % N/mm2 % N/mm2 % N/mm2 N/mm2 % 10   410 6 375 10 335 12 335 24 335 205 24 20   510 5 450 8 430 10 390 20 410 245 20 35   590 4 550 6 520 8 510 17 530 315 17 45   645 4 630 5 610 7 590 14 600 355 14