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Payment Type: T/T,L/C
Transportation: Ocean,Land,Air
Model No.: ASTM A312/ASME SA312 TP347H
Brand: YUHONG
Standard: Astm
Section Shape: Round
Application: Structure Pipe
Category: Seamless Steel Pipe
Product Name: Stainless Steel Seamless Pipe
Specification: ASTM A312/ASME SA312
Material: TP347H
Surface: Pickled and Annealed
ASTM A312/ASME SA312 TP347H Stainless Steel Seamless Pipe
ASTM A312 Tp347H is an austenitic stainless steel. It has chromium and nickel content which give it the corrosion resistant properties. For extra toughness, the A312 347H material has higher carbon content. The addition of more carbon causes toughness but is also less strong than the low carbon version of the same material. But to overcome the issue, columbium is added in the A312 Tp347H material. The alloy composition makes the material resistant to most oxidizing agents. Regardless of the high carbon content, the SA312 Tp347H material has excellent resistance to intergranular corrosion. This makes the 347H Stainless Steel Pipe be applied in applications that operate under high temperatures with high risk of oxidization. The SS 347H Seamless Pipe material is cold drawn and therefore cannot be hardened by heat treatment. But it could be hardened by cold working. The material could also be easily welded upon.
ASTM A312 TP47H Specification Chart
| ASTM / ASME Name | ASTM A312 / ASTM SA312 |
| ANSI / ASME Standard | ANSI/ASME B36.19M, ANSI/ASME B36.10M |
| Available Forms and Types | Square, Hex, Round, Rectangle, Hydraulic, Honed |
| Frequently Used | Fabricated, 100% X Ray Welded, ERW, Seamless, CDW, Welded |
| Pipe End Finish | Beveled End, Plain End, Treaded |
| Delivery Condition | Cold Drawn, Polished, Bright Annealed, Annealed and Pickled |
| Surface Coating and Finish | 2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements |
| 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 | 00001. Specification 00002. Grade 00003. Nominal Pipe Sizes 00004. Pipe Schedule or Wall Thickness 00005. Manufacturing Method (Seamless / Welded) 00006. Heat Number 00007. 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 Mechanical Properties
|
Yield Strength 0.2% Offset
|
Ultimate Tensile Strength
|
Elongation in 2 in.
| Hardness | ||
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (min.) | (max.) |
| 30,000 | 205 | 75,000 | 515 | 40 | 201 Brinell |
ASTM A312 TP347H 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 TP347H Chemical Composition
| Element | 347 | 347H |
| Chromium | 17.00 min.-19.00 max. | 17.00 min.-19.00 max. |
| Nickel | 9.00 min.-13.00 max. | 9.00 min.-13.00 max. |
| Carbon | 0.08 | 0.04 min.-0.10 max. |
| Manganese | 2.00 | 2.00 |
| Phosphorus | 0.045 | 0.045 |
| Sulfur | 0.03 | 0.03 |
| Silicon | 0.75 | 0.75 |
| Columbium & Tantalum | 10 x (C + N) min.-1.00 max. | 8 x (C + N) min.-1.00 max. |
| Iron | Balance | Balance |
Why is 347h SS used for chemical processing?
Grade 347 is a special austenitic stainless steel that can be repeatedly and intermittently exposed to temperatures above 800 degrees Celsius. These are improvements over 304 stainless steel. They are similar to grade 321 in some mechanical properties, but differ in that they contain columbium in the composition. The material is resistant to most aggressive media at medium and high temperatures.This is an important aspect required for chemical processing. The material has a minimum yield strength of 205MPa and a minimum tensile strength of 515MPa. This enables the material to withstand high temperature pressures above 850 degrees Celsius. Tubes and components also have good elongation and high hardness. 304 material can undergo intergranular corrosion at temperatures above 850 F. 347H has higher carbon content and heat resistance, so it can work in this temperature range.
The combination of pressure capacity, strength, hardness, heat resistance and corrosion resistance makes it suitable for chemical processing. These properties also make the material useful in other highly corrosive, high heat applications such as boiler tubes and casings, radiant superheaters, heat exchanger tubes, oil and gas refineries, and aircraft exhaust stacks.
Application:
1.Offshore Oil Drilling Company
2.Power generation
3.Petrochemicals
4.Gas handling
5.Specialty Chemicals
6.Drug
7.Pharmaceutical equipment
8.Chemical equipment
9.Seawater equipment
10.Heat exchanger
11.Condenser
12.Pulp and Paper Industry
| Selling Units | : | Kilogram |
|---|---|---|
| Package Type | : | Ply-Wooden Case with plastic caps/ Bundle |
| Picture Example | : |
|
Packaging: Ply-Wooden Case with plastic caps/ Bundle
Productivity: 100 tons Per Month
Transportation: Ocean,Land,Air
Place of Origin: China
Supply Ability: According to Customers' Request
Certificate: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
HS Code: 7304419000
Payment Type: T/T,L/C
Incoterm: FOB,CFR,CIF,Express Delivery,EXW
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