Din 2393 Automotive Application Precision Welded Pipes 

Standard: DIN2393 We always provide highest quality seamless pipe/tube and best service.  

Chemical Compositions:

Steel Name	Steel Number	C(Max)	Si(Max)	Mn(Max)	P(Max)	S(Max)
ST34-2	1.0034	0.15	0.3	0.6	0.025	0.025
ST37-2	1.0038	0.17	0.3	0.7	0.025	0.025
ST44-2	1.0044	0.21	0.3	1.1	0.025	0.025
ST52-3	1.057	0.22	0.55	1.6	0.025	0.025

Mechanical Properties:

Steel Grade		Minimum values for the delivery condition
Steel Name	Steel Number	(BK )		(BKW )		(BKS)			(GBK )		(NBK)
		Rm Mpa	A%	RmMpa	A%	RmMpa	ReHMpa	A%	RmMpa	A%	RmMpa	ReH2Mpa	A%
ST34-2	1.0034	460	6	410	12	410	305	16	300	28	310-410	205	28
ST37-2	1.0038	490	6	440	10	440	325	14	315	25	340-470	235	25
ST44-2	1.0044	560	5	510	8	510	375	12	390	21	410-540	255	21
ST52-3	1.057	640	4	590	6	590	435	10	490	22	490-630	355	22

Delivery Condition remarks:
BK: No heat treatment after the final cold drawing process.
BKW: After the final heat treatment, There is a suitable draing pass.
BKS: After the final cold drawing process, There is a stress relief heat treatment in a controlled atmosphere.
GBK: The last cold forming process is followed by annealing in a controlled atmosphere.
NBK: The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. (Bright Annealing).