Steel Tube Handbook - 2018

17 Steel with boron content (kind 20MnB5) upon agreement. * List of steel – see table of chemical composition at pages 20, 21.This group of tubes can be delivered also according to DS for exact tubes (cold drawn) – see page 60 and other. ** Tubes are not mechanically worked. D tolerance upon agreement. TDC Steel grade Testing and certificates Other TDC standards Name Condition Surface Testing Certificate Marking Surfaceprotection Packing 10294-1 E355 E355 J2 E420 J2* E 470* *steel type 20MnV6 + AR + N + N + AR Cold finished • + N or + SR visually missless adequate to production mode. • cast analysis • tensile test • impact test (if possible) • dimensions • visual Specific: EN 10204 3.1 Longitudinally on tube • paint stenciling • die stamping • label on tube Label on bundle (D < 45 mm) Data: • producer • standard EN • steel grade • delivery condition • D x d (EN 10294 - 1) • +H and cast number (EN 10297-1) • inspector • without • upon agreement bundle 300– 3500 kg 10297-1 E235 E275 E315 E355 + AR, + N + AR, + N + AR, + N + AR, + N + AR + N + N + N + N + N + N + N + N + N + QT (+ N) + QT (+ N) + QT (+ N) + QT (+ N) + QT (+ N) + N (+A) + N (+A) + N (+A) + N (+A) + N Mandatory: • cast analysis • tensile test • impact test ((if possible)) • dimensions • visual • material identification (for alloyed steel) Optional: • upon agreement Table 17 of standard Non-specific: EN 10204 2.1 (2.2.) Specific: EN 10204 3.1 (3.2) (See also page 7) E470 E275K2 E355K2 E460K2 E420J2 C22E C35E C45E C60E 38Mn6 41Cr4 25CrMo4 30CrMo4 34CrMo4 42CrMo4 C10E C15E C15R 20NiCrMo2-2 16MnCr5 EN 10083-2 - C steel C 22, 35, 40, 45, 55, 60; CxyE and CxyR - 22, 35, 40, 45, 50, 55, 60 and 28Mn6 EN 10083-3 - Alloy steels (see overview page 21 and comparison of steels) EN 10084 - CxyE a CxyR - 10, 15, 16 and alloy steels These standards are presented only informatory. Steel tubes produced from steels from these standards are included in EN 10297-1 1629 1630 See page 23 17200 17204 17210 Steel types: C22 Ck22 Cm22 C10* Hot finished - U • as rolled Cold finished •+NBK, +BK • visual • dimensions • other test upon agreement DIN 50049 2.2, 3.1.B • each tube • small diameter by label • without • upon agreement 6323/1,3 HFS 3 (360) HFS 4 (410) HFS 5 (490) HFS 8 (540) Hot finished • as rolled • tensile test • flattening • impact test • drift expanding • hydrotest or NDT upon agreement Complian- ce with standard certificate Steel designation according to EN: • steel for tubes for mechanical treatment: steel E355 + AR, E 355 + N E – steel for machine par ts, 355 – minimum yield strength in N/mm2, +AR – heat treatment is not required, +N – normalising annealed or formed steel 20MnV6 steel designated by chemical composition – guaranteed mean C content 0,20%, guaranteed content Mn and V +AR – heat teratment is not required, +N – normalising annealed or formed • steel for machine parts: steel without heat treatment after mechanical treatment non-alloy steel E 235, E275, E315, E355 Condition +AR or +N steel with specific impact qualities (fine-grain) E275K2, E355K2 K2 – guaranteed characteristic of impact energy 40 J (K) by temperature –20 °C steel with heat treatment after mechanical treatment steel C22E C – steel with carbon content 0,22%, E – reference to maximum checked content of S and P steel 38Mn6 – guaranteed mean C content and guaranteed Mn content Note: Steel grades marking according to EN - see page 105