JIS 3461 STB35 Heat Exchanger Steel Tube , Carbon Steel Tube

JIS 3461 STB35 Carbon steel pipe for boilers and heat exchangers

JIS G3461 STB 35 used for exchanger heat on inside and outside of the tube, such as water tubes, smoke tubes, superheater tubes, air preheater tubes, etc. of the boiler, and heat exchanger tubes, condenser tubes, catalyzer tubes, etc. used in chemical and petroleum industries. However, it is no application to the steel tubes for heating furnace and steel heat exchanger tubes for low-temperature service. ANSON is an experienced boiler and pressure steel tube supplier which can offer you JIS G3461 steel tubes of all grade and dimension range.

The physical properties of STB35 JIS G3461 include high strength, low weight, durability, ductility and resistance to corrosion. Steel, as we all know, offers great strength though it is light in weight. In fact, the ratio of strength to weight for steel is the lowest than any other building material available to us.

JIS G3461 STB35/STB340 Chemical Composition:

JIS G3461	Traditional symbol	C	Si	Mn	P	S
STB 340	STB 35	0.18 max	0.35 max	0.30 to 0.60	0.035 max	0.035 max
STB 410	STB 42	0.32 max	0.35 max	0.30 to 0.80	0.035 max	0.035 max
STB 510	STB 52	0.25 max	0.35 max	1.00 to 1.50	0.035 max	0.035 max

 

JIS G3461 STB35/STB340 Mechanical Property:

JIS G3461	Tensile strength N/mm2	Yield point or proof stress N/mm2	Elongation %			Hardness
			Outside diameter under 10 mm	Outer diameter 10 mm or over to and excl. 20 mm	Outer diameter 20mm or over
			No. 11 test piece	No. 11 test piece	No. 11 test piece No. 12 test piece
STB 340	340 min	175 min	27 min	30 min	35 min	77max
STB 410	410 min	255 min	17 min	20 min	25 min	79max
STB 510	510 min	295 min	17 min	20 min	25 min	92max

 

JIS G3461 STB35/STB340 Equivalent steel grade:

JIS G3461	ASTM	ASME	BS	DIN	ISO	ABS	NK	LRS	DNV
STB 340	A178	SA178 A	3059-P1 320	17175 st 35.8		ABS D	KSTB 33	Sec 6 320	Sec 4-E-TS360
STB 410	A178 C	SA178 C	3059-P2 440	17175 st 45.8		ABS F	KSTB 42	Sec 6 410	Sec 4-E-TS410-1
STB 510				17175 19Mn 5					Sec 4-E-TS510

 

JIS G3461 STB35/STB340 Manufacture Method:

Symbol of class	Heat treatment
	Hot finished seamless steel tube	Cold finished seamless steel tube	Electric resistance welded steel tube other than hot finished or cold finished steel tube	Finished electric resistance welded steel tube	Fold finished electric resistance welded steel tube
STB 340	As manufactured, as required, low-temperature annealing or normalizing may be performed.	Low-temperature annealing, normalizing or full annealing.	Normalizing	As manufactured. However, as required, low-temperature annealing or normalizing may be performed.	Normalizing
STB 410	As manufactured. However, as required, low-temperature annealing or normalizing may be performed.	Low- temperature annealing, normalizing or full annealing.	Normalizing	Low- temperature annealing
STB 510	Normalizing