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ASTM A312 347H Stainless Steel Seamless Pipe with Sch 80s Thickness and Polished Surface

Min Bestellmenge	50 kg
Preis	US $4.85-6.25 / kg

Produktdetails

Außendurchmesser	1/2" bis 24"	Dicke	SCH5 SCH10 SCH40 SCH80 SCH160 XXS
Materialqualität	Incone 904L, 254MO, 317L	Standard	ASTM A312, A269
Längentoleranz	+/- 5mm	Toleranz für den Außendurchmesser	+/- 0.2mm
Dicke Toleranz	+/- 0,02 mm	Oberflächenbehandlung	Glühen, Beizen, Sandstrahlen
Chrominhalt	17.00 Min.-19.00 Max.	Nickelinhalt	9.00 Min.-13.00 Max.
Kohlenstoffgehalt	0,08 (347), 0,04 min. – 0,10 max. (347H)	Dichte	7,96 g/cm3
Schmelzbereich	2550 - 2635 °F (1398 - 1446 °C)	Wärmeleitfähigkeit	16,3 W/m-°K bei 100°C
Elastizitätsmodul	193 GPa
Hervorheben	ASTM A312 Stainless Steel Pipe , Sch 80s Seamless Pipe , Polished Surface 347H Stainless Steel Tube

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Produkt-Beschreibung

ASTM A312 TP347/H Schedule 80s Seamless Pipe

Φ 73mm (2.5inch) diameter, 7.01mm thickness seamless pipe

Product Specifications

Parameter	Specification
Product Name	347H Stainless Steel Seamless Tube
Shape	Round
Outside Diameter	1/2" - 24"
Thickness	SCH5, SCH10, SCH40, SCH80, SCH160, XXS
Material Grade	Special steel: Incone 904L, 254MO, 317L and similar
Raw Material	Tsing Shan, Walsin, YXSS
Standard	ASTM A312, A269
Length	Customized to customer requirements
Tolerance	OD: ±0.2mm, Thickness: ±0.02mm, Length: ±5mm
Surface Treatment	Annealing, pickling, sandblasting
Marking	LOGO, SIZE, STANDARD, HEAT TREATMENT, customer requests
Quality Control	Internal inspection team, strict standards, third-party inspection accepted
Applications	Industrial, exhaust, water, petroleum, chemical, nuclear, power, shipbuilding, paper, food, decoration, machinery, construction
Testing	Squash test, extended test, water pressure test, heat treatment, NDT
Delivery	Large raw material stock ensures timely order completion

Alloy 347/347H Stainless Steel Overview

Alloy 347 (S34700) is a stabilized stainless steel offering excellent resistance to intergranular corrosion following exposure to temperatures between 800-1500°F (427-816°C). Stabilized by columbium and tantalum additions, it provides superior high-temperature mechanical properties with higher creep and stress rupture capabilities compared to Alloy 304 and 304L.

General Properties

Alloy 347 (UNS S34700) is a columbium-stabilized austenitic stainless steel with good general corrosion resistance and enhanced performance in strong oxidizing conditions compared to 321 stainless. It maintains excellent intergranular corrosion resistance after exposure to 800-1500°F (427-816°C) and offers good oxidation resistance and creep strength up to 1500°F (816°C).

Alloy 347H (UNS S34709) features higher carbon content (0.04-0.10) for enhanced creep resistance and higher strength above 1000°F (537°C). The alloy cannot be hardened by heat treatment, only by cold working, and can be easily welded using standard fabrication practices.

Corrosion Resistance

Alloy 347 stainless steel exhibits corrosion resistance comparable to 304 stainless, with superior performance in the 800-1500°F temperature range where unstabilized alloys suffer intergranular attack. It performs better than Alloy 321 in strongly oxidizing environments up to 1500°F (816°C).

Suitable for nitric solutions, most diluted organic acids at moderate temperatures, and pure phosphoric acid at lower temperatures. Resists polythionic acid stress corrosion cracking in hydrocarbon service. Not recommended for chloride solutions or sulfuric acid applications.

Chemical Composition

Element	347 (%)	347H (%)
Chromium	17.00-19.00	17.00-19.00
Nickel	9.00-13.00	9.00-13.00
Carbon	0.08 max	0.04-0.10
Manganese	2.00 max	2.00 max
Phosphorus	0.045 max	0.045 max
Sulfur	0.03 max	0.03 max
Silicon	0.75 max	0.75 max
Columbium & Tantalum	10×(C+N) min-1.00 max	8×(C+N) min-1.00 max
Iron	Balance	Balance

Physical Properties

Density	0.288 lbs/in³ (7.96 g/cm³)
Specific Heat	0.12 BTU/lb-°F (500 J/kg-°K)
Modulus of Elasticity	28.0 × 10⁶ psi (193 GPa)
Thermal Conductivity	133 BTU/hr/ft²/ft/°F (16.3 W/m-°K)
Melting Range	2550-2635°F (1398-1446°C)
Electrical Resistivity	72 Microhm-cm at 20°F

Thermal Expansion Coefficients

Temperature Range	Expansion Coefficient
68-212°F (20-100°C)	9.2 × 10⁻⁶ in/in°F (16.0 × 10⁻⁶ cm/cm°C)
68-1112°F (20-600°C)	10.5 × 10⁻⁶ in/in°F (18.9 × 10⁻⁶ cm/cm°C)
68-1832°F (20-1000°C)	11.4 × 10⁻⁶ in/in°F (20.5 × 10⁻⁶ cm/cm°C)

Product Images

Umbauten:

ASTM A312 347H Stainless Steel Seamless Pipe with Sch 80s Thickness and Polished Surface

ASTM A312 Stainless Steel Pipe

Sch 80s Seamless Pipe

Polished Surface 347H Stainless Steel Tube