Changzhou Tengyue Stainless Steel Pipe Co.,Ltd-Stainless steel pipe Standard (Norm) GOST 9940

Standard (Norm)

GOST 9940-81. Seamless Hot-Finished Tubes of Corrosion Resistant Steel

Outside Diameter: 76 - 159 mm (76; 83; 89; 95; 102; 108; 114; 121; 127; 133; 140; 146; 152; 159)

Wall Thickness: 5 - 26 mm (5; 5,5; 6; 6,5; 7; 7,5; 8; 8,5; 9; 9,5; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26)

Tolerances:
OD:
Ordinary accuracy ?1,5%
High accuracy ?1%

Wall Thickness:
WT 5 - 8 mm: ordinary acc. +20% -15%; high acc. +12,5% - 15%
WT 8,5 - 20 mm: ordinary acc. ?15%; high acc. +12,5% - 15%
WT 21 - 26mm: ordinary acc. +12,5% -15%; high acc. ?12,5%

Notes:

Steel grades: 08Cr13, 08Cr17,12Cr13, 12Cr17, 15Cr28, 15Cr25Ti, 04Cr18Ni10, 10Cr23Ni18, 08Cr17Ni15Mo3Ti, 08Cr18Ni10, 08Cr18Ni10Ti, 08Cr18Ni12Nb, 08Cr18Ni12Ti, 08Cr20Ni14Si2,10Cr17Ni13Mo2Ti, 12Cr18Ni9, 12Cr18Ni10Ti, 12Cr18Ni12Ti, 17Cr18Ni9, 08Cr22Ni6Ti.
Random length:
for OD 76 - 114 mm - from 1.5 m to 8 m.
For OD 121-159 mm -from 1.5 m to 9 m.
Fixed length - subject to agreement.

Sizes
OD, mm	WT, mm	OD, mm	WT, mm
76	5 - 10	127	6 - 22
83; 89; 95; 102; 108; 114	5 - 12	133; 140; 146; 152; 159	6 - 26
121	6 - 20

Mechanical properties
Steel Grade	Tensile Strength, N/mm² (min)	Yield Strength, N/mm² (min)	Elongation, % (min)
08Cr17Ti	372	-	17
08Cr18Ni10	510	-	40
08Cr18Ni10Ti	510	-	40
08Cr18Ni12Ti	510	-	40
08Cr22Ni6Ti	588	-	24
10Cr17Ni13Mo2Ti	529	-	35
10Cr23Ni18	491	-	37
12Cr13	392	-	21
12Cr18Ni10Ti	529	-	40
12Cr18Ni12Ti	529	-	40
15Cr25Ti	441	-	17

Chemical Composition (%, max)
Steel Grade	C	Si	Mn	Cr	Ni	Mo	S	P	Ti	V
08Cr17Ti	0,08	0,8	0,8	16-18	-	-	0,025	0,035	5*C-0,8	-
08Cr18Ni10	0,08	0,8	2	17-19	9-11	-	0,02	0,035	-	-
08Cr18Ni10Ti	0,08	0,8	2	17-19	9-11	-	0,02	0,035	5*C-0,7	-
08Cr18Ni12Ti	0,08	0,8	2	17-19	11-13	-	0,02	0,035	5*C-0,6	-
08Cr22Ni6Ti	0,08	0,8	0,8	21-23	5,3-6,3	-	0,025	0,035	5*C-0,65	-
10cr17Ni13Mo2Ti	0,10	0,8	2	16-18	12-14	2-3	0,02	0,035	-	5*C-0,7
10Cr23Ni18	0,10	1	2	22-25	17-20	-	0,02	0,035	-	-
12Cr13	0,09-0,15	0,8	0,8	12-14	-	-	0,025	0,030	-	-
12Cr18Ni10Ti	0,12	0,8	2	17-19	9-11	-	0,02	0,035	5*C-0,8	-
12Cr18Ni12Ti	0,12	0,8	1-2	17-19	11-13	-	0,02	0,03	0,5-0,7	-
15Cr25Ti	0,15	1	0,8	21-37	-	-	0,025	0,035	5*C-0,9	-