EN 10305-four black phosphated chilly drawn seamless tube for hydraulic
Higher CZPT Seamless Metal Tube for Automotive Market and CZPT Application
| Standard | Materials Chemical Composition (%) | Tensile power Rm (Mpa) | Generate Power Reh (Mpa) Min | A Elongation(%) Min | ||||||||
| Metal Grade | Materials Quantity | C | Si | Mn | P | S | Cr | Mo | ||||
| DIN1629 | ST37 | 1.5714 | ≤ .seventeen | ≤ .55 | ≤1.sixty | ≤0.04 | ≤0.04 | – | – | 350-480 | 235 | twenty five |
| ST44 | 1.5718 | ≤ .21 | ≤ .fifty five | ≤1.60 | ≤0.04 | ≤0.04 | – | – | 420-550 | 275 | 21 | |
| ST52 | one.571 | ≤ .22 | ≤ .fifty five | ≤1.sixty | ≤0.04 | ≤0.035 | – | – | 550-650 | 355 | 22 | |
| DIN1630 | ST37.four | 1.5715 | ≤ .17 | ≤ .35 | ≥0.035 | ≤0.04 | ≤0.04 | – | – | 350-480 | 235 | twenty five |
| ST44.4 | one.5717 | ≤ .21 | ≤ .35 | ≥0.04 | ≤0.04 | ≤0.04 | – | – | 420-550 | 275 | 21 | |
| ST52.four | 1.5711 | ≤ .22 | ≤ .55 | ≤1.60 | ≤0.04 | ≤0.035 | – | – | 550-650 | 355 | 22 | |
| Material Chemical Composition (%) | |||||||||
| Standard | Steel Grade | Substance Number | C | Si | Mn | P | S | Cr | Mo |
| DIN 2391 | ST35 | one.0308 | <= 0.17 | <= 0.35 | >=.04 | <=0.571 | <=0.571 | – | – |
| ST45 | one.0408 | <= 0.21 | <= 0.35 | >=.04 | <=0.571 | <=0.571 | – | – | |
| ST52 | one.058 | <= 0.22 | <= 0.55 | <=1.60 | <=0.571 | <=0.571 | – | – | |
| BK | BKW | BKS | GBK | ||||||
| Metal Grade | Rm Tensile Strength (Mpa) Min | A Elongation(%) Min | Rm Tensile Power (Mpa) Min | A Elongation(%) Min | Rm Tensile Strength (Mpa) Min | Rel Produce Strength(Mpa) Min | A Elongation (%) Min | Rm Tensile Power (Mpa)Min | A Elongation (%)Min |
| ST35 | 480 | 6 | 420 | ten | 420 | 315 | 14 | 315 | twenty five |
| ST45 | 580 | 5 | 520 | 8 | 520 | 375 | twelve | 390 | 21 |
| ST52 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 |
| Normal | Metal Grade | Content Quantity | C | Si | Mn | P | S | Cr | Mo |
| EN10305-1 EN10305-4 |
E235 | one.0308 | <= 0.17 | <= 0.35 | >=.04 | <=0.571 | <=0.571 | – | – |
| E255 | one.0408 | <= 0.21 | <= 0.35 | >=.04 | <=0.571 | <=0.571 | – | – | |
| E355 | 1.058 | <= 0.22 | <= 0.55 | <=1.60 | <=0.571 | <=0.571 | – | – |
| Metal Grade | (+C) | (+LC) | (+SR) | (+A) | (+N) | |||||||
| Rm Tensile Strength (Mpa) Min | A Elongation(%) Min | Rm Tensile Strength (Mpa) Min | A Elongation(%) Min | Rm Tensile Toughness (Mpa) Min | Rel Yield Energy(Mpa) Min | A Elongation (%) Min | Rm Tensile Toughness (Mpa)Min | A Elongation (%)Min | Rm Tensile Strength (Mpa) | Rel Produce Strength (Mpa) Min | A Elongation (%) Min | |
| E235 | 480 | six | 420 | ten | 420 | 350 | 16 | 315 | 25 | 340-480 | 235 | 25 |
| E255 | 580 | 5 | 520 | eight | 520 | 375 | twelve | 390 | 21 | 440-570 | 255 | 21 |
| E355 | 640 | four | 580 | 7 | 580 | 450 | ten | 450 | 22 | 490-630 | 355 | 22 |
