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DIN 1629

Date:2018-03-23 keywords:DIN 1629

DIN 1629Seamless Steel pipe Of Non Alloys Steels are made of unalloyed steels, it's main grades are St 37.0, St44.0, St52.0, Din 1629 seamless steel pipes application fields are: chemical plant, vessels, pipework construction and for common mechanical engineering purposes. Normally DIN 1629 standard are manufactured with no limiting working pressure values. Working temperature is limited below 300℃.

Chemical composition:

Steel Grade		Type of deoxidization (R, killed (including semi-killed)) (RR,fully killed)	Chemical Composition, % by mass
Symbol	Material Number		C	P	S	N¹)	Addition of nitrogen fixing elements (e.g.not less than 0,020% Al total
St37.0	1.0254	R	0.17	0.040	0.040	0.009²)	-
St44.0	1.0255	R	0.21	0.040	0.040	0.009²)	-
St52.0³)	1.0421	RR	0.22	0.040	0.035	-	Yes

Mechanical properties:

Steel Grade		Upper Yield Stress ReH for wall thickness, in mm,			Tensile strength Rm N/mm²	Elongation(%) A5
Symbol	Material Number	up to 16	over 16 up to 40	over 40 up to 65	Tensile strength Rm N/mm²	Longitudinal	Transverse
St 37.0	1.0254	235	225	216	350²) to 480	25	23
St 44.0	1.0256	275¹)	265¹)	255¹)	420²) to 550	21	19
St 52.0	1.0421	355	345	335	500²) to 650	21	19

【Prev】 : DIN 17175
【Next】 : DIN 2391

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