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ASTM A276 347H Grade Hot Rolled Stainless Steel Bar SS Bar with OD 6-300mm
Product Details
| Model NO. | 347H | Shape | Round |
|---|---|---|---|
| Technique | Hot Rolled | Surface Treatment | Pickling |
| Tolerance | H9 H10 H11 H12 H13 H14 | Length | 6m/PCS |
| Diameter Range | 10 - 350mm | Finishing | Bright Bar / Black Surface |
| Heat Treatment | Solid Solution, Ageing | Surface Process | Polishing, Peeling |
| Tensile Strength | ≥515 MPa | Yield Strength | ≥205 MPa |
| Elongation | ≥35% | Hardness | ≤192 HB |
| Density | 7.98 G/cm³ | ||
| Highlight | 347H Grade Stainless Steel Bar,Hot Rolled SS Bar,OD 6-300mm Stainless Steel Round Bar |
||
Product Description
ASTM A276 Alloy 347H Stainless Steel Bar
ASTM A276 Alloy 347H Stainless Steel Bar available in diameters from 10-250mm with standard 6m length or custom cutting options.
Product Specifications
| Product | Stainless Steel Bar |
|---|---|
| Grade | 347H |
| Diameter | 10 - 350mm |
| Length | 6m or custom cutting as requested |
| Finishing | Bright Bar / Black Surface |
| Heat Treatment | Solid Solution, Ageing |
| Surface Process | Polishing, Peeling |
| Other Available Grades | 201, 303, 304, 304L, 309S, 310S, 316L, 316Ti, 317L, 321, 347, 410, 420, 430, 431, 2205, 2507, 904L, 254SMO, 416, 440A/B/C |
| MOQ | 500 Kgs |
| Loading Port | Shanghai Port |
| Processing | Cutting |
| Packing | Wooden box or PP bag wrapping |
Available 347H Stainless Steel Round Bar Diameters
10mm
12mm
14mm
15mm
16mm
18mm
19mm
20mm
22mm
25mm
30mm
32mm
35mm
38mm
40mm
45mm
48mm
50mm
55mm
60mm
65mm
70mm
75mm
80mm
85mm
90mm
95mm
100mm
105mm
110mm
115mm
120mm
130mm
140mm
150mm
160mm
170mm
180mm
190mm
200mm
210mm
220mm
230mm
240mm
250mm
260mm
270mm
280mm
290mm
300mm
310mm
320mm
330mm
340mm
Material Description
347H stainless steel is an austenitic stainless steel with excellent intergranular corrosion resistance and high temperature strength achieved through niobium (Nb) stabilizing element addition. Widely used in chemical, petroleum, electric power and other high temperature industrial applications.
Chemical Composition (Typical Values)
- Carbon (C): 0.04-0.10%
- Silicon (Si): ≤1.00%
- Manganese (Mn): ≤2.00%
- Phosphorus (P): ≤0.045%
- Sulfur (S): ≤0.030%
- Chromium (Cr): 17.0-19.0%
- Nickel (Ni): 9.0-13.0%
- Niobium (Nb): 10×C% ~ 1.10%
Mechanical Properties (Room Temperature)
- Tensile strength: ≥515 MPa
- Yield strength: ≥205 MPa
- Elongation: ≥35%
- Hardness: ≤192 HB
Physical Properties
- Density: 7.98 g/cm³
- Melting point: 1398-1427°C
- Coefficient of thermal expansion: 16.6μm/m·°C (20-100°C)
- Thermal conductivity: 16.3W/m·K (100°C)
Specifications
- Diameter range: 5mm to 300mm (customizable)
- Length: Standard 3000mm or 6000mm, customizable per requirements
International Standards
- ASTM A479/A479M: High Temperature Stainless Steel Bars
- ASTM A276: Stainless Steel Bars and Profiles
- EN 10088-3: European Stainless Steel Standard
- GB/T 1220: China Stainless Steel Bar Standard
Key Features
- Intergranular corrosion resistance: Niobium addition prevents chromium carbide precipitation
- High temperature strength: Maintains mechanical strength and oxidation resistance
- Good weldability: Suitable for various welding processes with stable post-weld performance
- Oxidation resistance: Excellent performance in high temperature oxidation environments
Advantages
- Excellent high temperature performance: Suitable for environments up to 800°C
- Strong corrosion resistance: Good performance in acidic and alkaline media
- Long service life: Long-term stability in harsh conditions reduces maintenance costs
- Wide applicability: Meets requirements of complex working conditions across industries
International Grade Equivalents
- United States: UNS S34709
- Europe: 1.4961 (EN)
- Germany: X6CrNiNb18-10 (Werkstoff Nr.)
- Japan: SUS347H (JIS)
- China: 0Cr18Ni11Nb (GB/T 1220)
Applications
347H stainless steel bars are widely used in the following industrial sectors:
- Chemical Industry: Reactors, heat exchangers, pipeline systems
- Oil and Gas: Downhole tools, valves, pump components
- Power Generation: Boiler components, superheaters, heat exchangers
- Aerospace: High-temperature components, engine parts
- Food Processing: High temperature equipment, pipelines
- Other Applications: High temperature furnace components, heat exchangers, fasteners
347H stainless steel bars offer excellent high temperature strength, corrosion resistance, and good processing properties, making them ideal for high temperature, corrosive environments. Their wide application range and stable performance establish an important position across multiple industries.
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