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Grade 304 Stainless Steel Sheet
304(1.4301)/304L(1.4307)/304H(1.4948) STAINLESS STEEL
Stainless Steel Grade 304H includes a high carbon content making the steel more suitable for utilization in applications where high temperatures are available. The benefit of this grade is that it is an austenitic chromium-nickel steel alloy as well as the greater carbon content distribute to increased tensile and yield strength. The material is recommended for utilizing in ASME pressure vessels in working service above 525° C because of the grade's heat resistant properties.
CHEMICAL COMPOSITION
Element | C | Mn | Si | P | S | Cr | Ni | Fe |
302 | 0.15% | 2.0% | 0.75% | 0.045% | 0.03% | 17.0~19.0% | 8.0~10.0% | Remainder |
303 | 0.10% | 2.0% | 1.00% | 0.040% | 0.015% | 17.0~19.0% | 8.0~10.0% | Remainder |
304 | 0.07% | 2.0% | 0.75% | 0.045% | 0.03% | 17.5~19.5% | 8.0~10.5% | Remainder |
304L | 0.03% | 2.0% | 0.75% | 0.045% | 0.03% | 17.5~19.5% | 8.0~12.0% | Remainder |
304H | 0.04~0.10% | 2.0% | 0.75% | 0.045% | 0.03% | 18.0~20.0% | 8.0~10.5% | Remainder |
309 | 0.20% | 2.0% | 0.75% | 0.045% | 0.03% | 22.0~24.0% | 12.0~15.0% | Remainder |
321 | 0.08% | 2.0% | 0.75% | 0.045% | 0.03% | 17.0~19.0% | 9.0~12.0% | Remainder |
330 | 0.08% | 2.0% | 0.75~1.50% | 0.03% | 0.03% | 17.0~20.0% | 34.0~37.0% | Remainder |
347 | 0.08% | 2.0% | 0.75% | 0.045% | 0.03% | 17.0~19.0% | 9.0~13.0% | Remainder |
MECHANICAL PROPERTIES
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 |
||||
302 | 620 | 275 | 40 | 92 | 147 |
303 | 620 | 310 | 30 | 96 | 230 |
304 | 515 | 205 | 40 | 92 | 201 |
304L | 485 | 170 | 40 | 92 | 201 |
304H | 515 | 205 | 40 | 92 | 201 |
309 | 515 | 205 | 40 | 95 | 217 |
321 | 515 | 205 | 40 | 95 | 217 |
330 | 552 | 207 | 40 | 95 | 217 |
347 | 515 | 205 | 40 | 92 | 201 |
304/304L/304H COMMON APPLICATIONS