Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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Corrosion Resistance Stainless Steel Flat Bar ASTM A276 TP304 Austenitic
What does ASTM A276 mean?
The ASTM A276 specification is for hot-finished or cold-finished stainless-steel bars except for bars for reforging. This includes round squares, hexagons, and hot-rolled or extruded shapes such as angles, tees and channels that are commonly used types of stainless steel.
Bars shall be furnished in one of the following conditions:
1 Condition A — Annealed.
2 Condition H — Hardened and tempered at a relatively low temperature.
3 Condition T — Hardened and tempered at a relatively high temperature.
4 Condition S — Strain Hardened–Relatively light cold work.
5 Condition B — Relatively severe coldwork.
Stainless Steel 304 and stainless steel 304L are formed with a combination of nickel-chromium-carbon, both are used as general stainless steel with standard resistance to most corrosive environments as well as to organic and inorganic chemicals and to food and drinks.
A276 TP304/L/H Chemical Compositions
| Grade | C | Mn | Si | P | S | Cr | Ni | N |
| SS 304 | 0.08 max | 2 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | 8 – 11 | - |
| SS 304L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.03 max | 18 – 20 | 8 – 13 | - |
| SS 304H | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 18 – 20 | 8 – 10.5 | - |
A276 TP304/L/H Mechanical Properties
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
| 304 | 75 | 30 | 40 | 201 | 92 |
| 304L | 70 | 25 | 40 | 201 | 92 |
| 304H | 75 | 30 | 40 | 201 | 92 |
A276 TP304/L/H Physical Properties
| SS 304/304L | ||||||
| Density lbm/in3 | Thermal Conductivity (BTU/h ft. °F) | Electrical Resistivity (in x 10-6) | Modulus of Elasticity (psi x 106 | Coefficient of Thermal Expansion (in/in)/°F x 10-6 | Specific Heat BTU/lbm -°F | Melting Range(°F) |
| at 68°F: 0.285 | 9.4 at 212°F | 28.3 at 68°F | 28 | 9.4 at 32 – 212°F | 0.1200 at 68°F to 212°F | 2500 to 2590 |
| 12.4 at 932 °F | 39.4 at 752°F | 10.2 at 32 – 1000°F | ||||
| 49.6 at 1652 °F | 10.4 at 32 – 1500°F | |||||
| SS 304H | ||||||
| Density lbm/in3 | Thermal Conductivity (BTU/h ft. °F) | Electrical Resistivity (in x 10-6) | Modulus of Elasticity (psi x 106 | Coefficient of Thermal Expansion (in/in)/°F x 10-6 | Specific Heat BTU/lbm -°F | Melting Range(°F) |
| at 68 °F | at 68 – 212°F | at 68 – 1600°F | at 212°F | at 932°F | at 32 – 212°F | in tension (E) |
| 0.285 | 9.2 | 11 | 9.4 | 12.4 | 0.12 | 29 x 106 |
STAINLESS STEEL FLAT BAR TOLERANCE: ASTM A276/A484M
| Width (MM) | THICKNESS TOLERANCE OF THICKNESS (MM) | WIDTH TOLERANCE (MM) | ||
| 3.2 to 13 | Over 13 to 25 | Over 25 to 50 | ||
| UP TO 25 | +-0.20 | +-0.25 | - | +-0.40 |
| OVER 25 TO 50 | +-0.30 | +-0.40 | +-0.80 | +-0.80 |
| OVER 50 TO 100 | +-0.40 | +-0.50 | +-0.80 | +1.60-0.80 |
| OVER 100 TO 150 | +-0.40 | +-0.50 | +-0.80 | +2.40-1.60 |
Applications
-Oil & Gas Industrires
-Chemical Industries
-Construction Industries
-In Offshore Pipelines, Pipe Works
-Petrochemical Industry
-Shipbuilding Industries
-Hydraulic Applications
-Piping Systems
