DIN 2391 冷拔或冷軋精密無縫鋼管生產標準 Pt1&Pt2 下載

作者：董經理1333???3??? 更新時間：2023-05-30

DIN 2391 冷拔或冷軋精密無縫鋼管生產標準 Pt1&Pt2 下載

冷拔精密無縫鋼管 Precision cold drawn seamless steel tube

DIN2391鋼管的主要用途

液壓系統用鋼管,汽車用鋼管,廣泛用于液壓系統用鋼管、注塑機用鋼管、液壓機用鋼管、船用鋼管、EVA發泡油壓機械、精密油壓裁斷機用鋼管、制鞋機械、液壓設備、高壓油管、液壓油管、卡套接頭、鋼管接頭、橡膠機械、鍛壓機械、壓鑄機械、工程機械、混泥土泵車用高壓鋼管、環衛車用、汽車行業、造船工業、金屬加工、軍工、柴油機、內燃機、空壓機、建筑機械、農林機械等。

DIN2391鋼管的化學成分

牌號	化學成分(%)
C max	Si max	Mn	P max	S max
St 35	0.17	0.35	≥0.40	0.025	0.025
St 45	0.21	0.35	≥0.40	0.025	0.025
St 52	0.22	0.55	≤1.60	0.025	0.025

Steel grade		化學成分(%)
Steel name	Steel number	C max	Si max	Mn	P max	S max	Al min
E215	1.0212	0.10	0.05	0.70	0.025	0.025	0.025
E235	1.0308	0.17	0.35	1.20	0.025	0.025	-
E355	1.0580	0.22	0.55	1.60	0.025	0.025	-

DIN2391精密鋼管的機械性能

Steel grade	冷拔光亮硬態 BK		冷拔光亮硬態 BKW		拉拔光亮消除應力退火 BKS			退火 GBK		正火 NBK
常用鋼號	抗拉強度Rm N/mm min	伸長率% min	抗拉強度Rm N/mm min	伸長率% min	抗拉強度Rm N/mm min	屈服強度 ReH N/mm min	伸長率% min	抗拉強度Rm N/mm min	伸長率% min	抗拉強度Rm N/mm min	屈服強度 ReH N/mm min	伸長率% min
St35 E215	480	6	420	10	420	315	14	315	25	340-470	235	25
St45 E235	580	5	520	8	520	375	12	390	21	440-570	255	21
St52 E355	640	4	580	7	580	420	10	490	22	490-630	355	22

DIN2391精密鋼管的英文說明:

DIN 2391 applies to seamless precision steel tubes and in compliance with ISO/DIN 3304, those tube dimensions have been selected from the range of manufacture dimensions which are mainly used as design elements.

If tubes having the tolerances and are produced according to the technical conditions of deivery as specified in this Standard are to e used as pipelines, then the dimensions specified in DIN 2448 may from time to time be used. These tubes must be ordered according to quality grade C.

DIN 2391 Pipe Seamless Precision Steel Tubes Size:
Outside Diameter (Nominal Size ): 4 - 260 mm
Wall Thickness: 0,5 - 25 mm
Delivery condition:BK ,BKW,BKS,GBK,NBK
Application: Industrial and Mechanical, Automotive
Notes:

Steel grades: St 35, St 45, St 52
Length up to 9 m.
Test certificates according to DIN EN 10204.

DIN 2391 Seamless Precision Steel Tubes Sizes
Nominal Size, mm	Wall Thickness, mm
6; 7	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0
8	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5
9	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8
10; 12	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0
14; 15; 16; 18	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5
20; 22	0,5; 0,8; 1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5
25; 26; 28; 30	1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0
32; 35; 38; 40	1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0
42; 45; 48; 50	1,0; 1,2; 1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0
55; 60; 65	1,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0
70; 75; 80	3,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0

DIN 2391 Seamless Precision Steel Tubes Mechanical Properties (Mpa)

Grade	Material Number	Tensile Strength MPa or N/mm2		Remaks (Similar to JIS)	Possibility Temperature
Grade	Material Number	Min Yield Point	Tensile Strength	Remaks (Similar to JIS)	Possibility Temperature
St30Si	1.0211	-	400Min	(STKM11)
		-	355Min
		-	285Min
		215	295~420
St30Al	1.0212	-	400Min	(STKM11)
		-	355Min
		-	285Min
		215	295~420
St35	1.0308	-	440Min	(STC38)
		-	370Min
		-	315Min
		235	340~470
St45	1.0408	-	540Min	(STKM13)
		-	470Min
		-	390Min
		255	440~570
St52	1.0580	-	590Min	(STKM19)
		-	540Min
		-	490Min
		350	490~630

DIN 2391 Seamless Precision Steel Tubes Chemical composition(%)

Grade	Mfg. Process	Chemical composition(%)
		C	Si	Mn	P	S	Ni	Cr	Mo	Others	a
											b
											c
											d
St30Si	S	0.10Max	0.30Max	0.55Max	0.040Max	0.040Max	-	-	-	-	a
											b
											c
											d
St30A1	S	0.10Max	0.05Max	0.55Max	0.040Max	0.040Max	-	-	-	Al deoxydized	a
											b
											c
											d
St35	S	0.17Max	0.35Max	0.40Max	0.050Max	0.050Max	-	-	-	-	a
											b
											c
											d
St45	S	0.21Max	0.35Max	0.40Max	0.050Max	0.050Max	-	-	-	-	a
											b
											c
											d
St52	S	0.22Max	0.55Max	1.60Max	0.050Max	0.050Max	-	-	-	-	a
											b
											c
											d

Note: a: Cold-finished/hard b: Cold-finished/soft c: Annealed d: Normalized

Delivery status	Abbreviation	Description
Cold-finished/hard (Cold-finished as-drawn)	BK	No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.
Cold-finished/soft (lightly cold-worked)	BKW	After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.
Annealed	GBK	After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum.
Normalized	NBK	The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum.