DIN2445 ST52.4 seamless steel pipes/tubes
1)Standard:DIN 2445
2)Size: OD. 10-650mm,WT.1-80mm.
ST52.4 seamless steel pipes Application:Boiler, electricity, mechanical, gas cylinder, chemical, offshore and oil service.
ST52.4 seamless steel pipes Surface Finishing:Anti-corrosion and high-temperature resistant with black painting.
Packing:Bundles, seaworthy wooden cases.With or without end caps, varnish or as per clients requirements
DIN2445 ST52.4 seamless steel pipes/tubes chemical composition
| Chemical composition | ||||||||
| Steel grade | Type of deoxidation (RR.fully killed) | Chemical composition,%bymass | Addition of nitrogen fixing elements (e.g.nolessthan0.020%Altotal) | |||||
| Symbol | Material number | C | Si | Mn | P | S | ||
| max | max | |||||||
| St52.4 | 1.0581 | RR | 0.22 | 0.55 | <=1.60 | 0.040 | 0.035 | Yes |
DIN2445 ST52.4 seamless steel pipes/tubes mechanical property
| Steel grade | Upper yield stress Reh for wall thickness in mm | Tensile strength Rm N/mm2 | Elongation after fracture A5 | Impact energy ISOV-notch test pieces at+20°C | |||||
| Symbol | Material number | Up to 16 | 16-40 | 40-65 | longitudinal | transverse | |||
| N/mm2min | %min | /min | |||||||
| St52.4 | 1.0581 | 355 | 345 | 335 | 500to650 | 21 | 19 | 43 | 27 |
Hot Finished Tubes Nominal Pressures 100 to 400 This Standard includes a summary of hot finished seamless steel tubes for dynamic loads,which are preferably used in hydraulic high-pressure installeations.it applies to straight tubes.For details relating to the bending of tubes,see the Standard ISO 336 or DIN 2448. The desigh of dynamicalty loaded high-pressure installations is based on the nominal pressure of the pump or accumulator systems.To this pressure,for purposes of calculating the pipes,should be added the increase in pressure from the dynamic load,and allowance made for the actual load altemation. The tubes included are calculated for continuous pulsating fatigue strength.
