Delivery Time:10 DAYS
Certification:ISO9001:2008, PED 97/23/EC

EN10204 3.1 Cold Drawn Seamless Steel Pipe Heat Exchanger Tube TP347 347H ASME SA213

ASME SA-213-TP347/347H

Seamless ferritic and austenitic alloy steel boiler, superheater, and heat exchanger tubes.

Chemical Properties:

Carbon: 0.08 max. Silicon: 0.75 max

Manganese: 2.00 Nickel: 9.00-13.0

Potassium: 0.04 Chromium: 17.0-20.0

Sulfur: 0.03 Molybdenum: n/a

Mechanical Properties:

Tensile Strength:

ksi: 75

MPa: 517

Yield:

ksa: 30

MPa: 207

Elongation in 2in. or 50mm, min. %: 35

Max. Hardness Rockwell B: 90

Technical details:

Technical composition (%)		Fe	Cr	Ni	Mn	Si	P	C	S	Nb
347	min	Bal.	17.0	9.0	-	-	-	0.040	-	8xC
	max	-	20.0	13.0	2.00	0.75	0.040	0.080	0.030	0.8
347H	min	Bal.	17.0	9.0	-	-	-	0.040	-	10xC
	max	-	20.0	13.0	2.00	0.75	0.040	0.100	0.030	1.0

Mechanical properties	347	347H
Tensile strenght (mpa, min)	515 - 690	515 - 740
Yield strength (0.2% offset mpa, min)	215 - 260	215 - 260
Elongation (%, min)	40	40
Density / weight (g / cm3 / kg)	7.9	7.9

Wst. 1.4550/1.4912

UNS S34700/S34709

Specification:

ASTM A 269/A 213/A 312 / EN10216-5 /EN ISO 1127 D4/T3/EN 10305 / PED 97/23 EC

Maximum exposure temperature: 850°C / 1560°F

Alloy 347 is an austenitic, niobium, stabilized stainless chromium-nickel steel. It has slightly imposed corrosion resistance over 321 stainless steel in strongly oxidizing environments and is preferable for aqueous and low temperature environments due to its good resistance to inter granular attack. The 347H has high carbon (0.4 to 0.1%) for better high temperature creep properties.

Characteristics:

Excellent resistance to inter granular corrosion due to niobium stabilization

Good resistance to organic aids and salt solutions

Sensitive to pitting and crevice corrosion

Less resistance to stress corrosion crashing by chloride solutions

Market Applications:

Oil refineries

Fires heater tubes

Power plants

Heat exchanges

High chemical process

High temperature stream service

Grade	UNS	Wst.No.	Maximum exposure temperature
304/304L	S30400/S30403	1.4301/1.4306	600°C / 1115°F
316/316L	S31600/S31603	1.4401/1.4406	430°C / 800°F
321	S32100	1.4541	650°C / 1205°F
316Ti	S31635	1.4571	500°C / 930°F
310/310S	S31000/S31003	1.4841/1.4845	1140°C / 2060°F
317L	S31703	1.4438	430°C / 800°F
600	N06600	2.4816	900°C / 1625°F
601	N06601	2.4851	1200°C / 2200°F
625	B06625	2.4856	980°C / 1800°F
800	N08800	1.4876	600°C / 1100°F
800H	N08810	1.4958	1100°C / 2000°F
800HT	N08811	1.4959	1100°C / 2000°F
825	N08825	2.4858	550°C / 1000°F
C22	N06022	2.4602	677°C / 1250°F
C276	N10276	2.4819