Sort 304H is the high carbon form of 304 and 304L. T304H (high carbon) in an extensive variety of gages and wraps up. Sort 304H has a carbon content somewhere around .04% and .10% Grade 304H with its higher carbon content discovers application at hoisted temperatures. The austenitic structure additionally gives these evaluations superb strength, even down to cryogenic temperatures.
It is regular for accreditations of Grade 304H to be double affirmed as 304/304H when the material has a higher carbon content. These properties are indicated for ASTM A240/A240M. Comparative however not as a matter of course indistinguishable properties are indicated for different items, for example, channel and bar in their separate particulars.
Table 1. Composition ranges for Stainless Steel 304H Round Bars
Table 2. Mechanical properties of Stainless Steel 304H Round Bars
|Grade||Tensile Strength (MPa) min||Yield Strength 0.2% Proof (MPa) min||Elongation (% in 50mm) min||Hardness|
|Rockwell B (HR B) max||Brinell (HB) max|
Table 3. Physical properties of Stainless Steel 304H Round Bars
|Grade||Density (kg/m3)||Elastic Modulus (GPa)||Mean Coefficient of Thermal Expansion (μm/m/°C)||Thermal Conductivity (W/m.K)||Specific Heat 0-100°C (J/kg.K)||Electrical Resistivity (nΩ.m)|
|0-100°C||0-315°C||0-538°C||at 100°C||at 500°C|
Table 4. Specification
|Range||3.17mm to 350mm dia|
|Designation||ASTM A276, ASME SA276|
|Finish||Bright, Black, Polish, Export Bright|
|Thickness||4.0mm - 100mm|
|Type||Bar, Bright Bar, Black Bars, Hex Bar, Square Bar, Rods, Polish Bar, Forged Bar, Round Bar|
|Length||Random, Fix & Cut Length|