Tp347h Stainless Steel Pipe Seamless And Welded

 

tp347h stainless steel pipe is a brand of stainless steel manufactured according to the ASTM standard. tp347h stainless steel pipe s are equivalent to china 0Cr18Ni11Nb stainless steel pipe. TP347H (1Cr19Ni11Nb) is a high-carbon niobium-containing Cr-Ni austenitic stainless steel. Due to the stabilizing element Nb, it has good resistance to intergranular corrosion and polysulfuric acid intergranular stress corrosion.

 

A312 TP347H Stainless Steel Pipe Composition Table

AISI		Ni	Mn	Si	S	C	Cr	P	Mo	N
TP 347H	min.	9.0	–	–	–	00.04	17.0	–	3.00	–
	max.	13.0	2.0	1.00	00.030	00.10	19.0	00.045	4.00	–

 

ASTM A312 TP347H Pipe Material Equivalent

MATERIAL	UNS	WERKSTOFF NR.
	USA	GERMAN
TP347H	S34709	1.4961

 

ASTM A312 TP47H Specification Chart

ASTM / ASME Name	ASTM A312 / ASTM SA312
ANSI / ASME Standard	ANSI/ASME B36.19M, ANSI/ASME B36.10M
Pipe End Finish	Beveled End, Plain End, Treaded
Delivery Condition	Cold Drawn, Polished, Bright Annealed, Annealed and Pickled
Pipe Wall Thickness	SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Industrial Value Added Services	Export Packaging, Threading, Threading, Non Beveling, Customer Tagging/ Marking, Destructive, Grooving, Export Documentation, Ultrasonic Testing, Machining, Cutting, Destructive, MTR’s Available, Material testing, Color Coding, Polishing
Marking on AISI 347H Pipes	Specification Grade Nominal Pipe Sizes Pipe Schedule or Wall Thickness Manufacturing Method (Seamless / Welded) Heat Number Manufacturer’s Name or Custom Logo - on request Marked Pipe Sample: ANSI B36.19 ASTM A312 TP347H 12" NB SCH 40S SEAMLESS HEAT NO. XXXX

 

ASTM A312 TP347H Stainless Steel Pipe Mechanical

Property	Value	Temperature	Comment
Elastic modulus	195 GPa	23.0 °C	Typical for Austenitic Stainless Steel
Elongation A50	25 - 35 %	23.0 °C
Poisson's ratio	0.3 [-]	23.0 °C	Typical for Austenitic Stainless Steel
Shear modulus	77 GPa	23.0 °C	Typical for Austenitic Stainless Steel
Tensile strength	515 MPa	23.0 °C
Yield strength	205 MPa	23.0 °C

 

TP347H Stainless Steel Pipe Thermal

Property	Value	Temperature	Comment
Coefficient of thermal expansion	1.7E-5 - 1.9E-5 1/K	23.0 °C	Typical for Austenitic Stainless Steel
Melting point	1230 - 1480 °C		Typical for Austenitic Stainless Steel
Specific heat capacity	440 J/(kg·K)	23.0 °C	Typical for Austenitic Stainless Steel
Thermal conductivity	11 - 21 W/(m·K)	23.0 °C	Typical for Austenitic Stainless Steel

 

Typical Elevated Temperature Tensile Properties stainless 347 (0.060 inch thick / 1.54 mm thick)

Test Temperature		Yield Strength .2% Offset psi (MPa)	Ultimate Tensile Strength psi (MPa)	% Elongation in 2 in.
°F	°C
68	20	36,500 (250)	93,250 (640)	45.0
400	204	36,600 (250)	73,570 (505)	36.0
800	427	29,680 (205)	69,500 (475)	30.0
1000	538	27,400 (190)	63,510 (435)	27.0
1200	649	24,475 (165)	52,300 (360)	26.0
1350	732	22,800 (155)	39,280 (270)	40.0
1500	816	18,600 (125)	26,400 (180)	50.0

 

Why 347h SS is used for Chemical Processing?

The grade 347 is specific austenitic stainless steel made for repeated intermittent exposure to temperatures above 800 degrees Celsius. These are modifications of 304 stainless steel. They are similar to the 321 grade in some mechanical properties but different in that it has columbium in the composition. The material is corrosion resistant to most corrosive media in medium to high temperatures. This is an important aspect required at chemical processing. The material has minimum yield strength of 205MPa and the minimum tensile strength at 515MPa. This allows the material to withstand high pressure at temperatures above 850 degrees Celsius. The pipes and components also have a good elongation and high hardness. The 304 material can undergo intergranular corrosion above temperatures 850 F. The 347H has a higher carbon content and heat resistant so that it can perform in this temperature range. The combination of the pressure containment capacities, the strength, hardness, heat resistance and corrosion resistance make it applicable for chemical processing. These properties also make the material used in other high corrosive, high heat applications such as the boiler tubes and casings, radiant super heaters, heat exchanger tubes, oil and gas refineries and aircraft exhaust stacks.

 

TP347H Stainless Steel Pipe Creep and Stress Rupture Properties

Typical creep and stress rupture data for Alloys 321 and 347 stainless steel are shown in the figures below. The elevated temperature creep and stress rupture strengths of the stabilized steels are higher than those of unstabilized Alloys 304 and 304L. These superior properties for the 321 and 347 alloys permit design of pressure-containing components for elevated temperature service to higher stress levels as recognized in the ASME Boiler and Pressure Vessel Code.

 

TP347H Stainless Steel Pipe Marking of packages

Through a correct and complete marking of packaging will create the conditions to avoid misuse, accidents, wrong delivery, mass and volume losses and customs penalties. We do marking very clear and precise on ASTM A213 TP347H Stainless Steel Seamless Tubes. You should contrast clearly with the package, usually it is applied in black color.