- Thickness: 6mm to 150mm
- Length: 3000mm to 15000mm
- Width: 1500mm to 4050mm
- Application:Suitable for steel boiler plates and high-temperature pressure vessel plates
- Supplementary Technology:HIC Test | NACE MR0175 | Z15 | Z25 | Z35 | S1 | S2 | S3 | S4.1 S5 | S6 | S7 | S8 | S9| S11 | S12 | S14 | S17
- Surface Options:Bare, Oiled, Mill Varnish, Galvanized
- Delivery State:Hot Rolled
- Steel Grades:Grade A, Grade B, Grade C
The ASTM A204 specification encompasses molybdenum-alloy steel plates designed specifically for welded boilers and high-temperature pressure vessels. CG Steel, as a seasoned supplier of boiler and pressure steel plates, can provide ASTM A204 steel plates across all grades and dimensions.
With three grades—A, B, and C—determined by their molybdenum composition, ASTM A204 steel plates offer flexibility. The maximum plate thickness is solely restricted by the chemical composition necessary to achieve specific mechanical property requirements. Typically, under this specification, plate and coil thickness are limited as follows: ASTM A204 Grade A: 6 in [150mm], ASTM A204 Grade B: 6 in [150mm], ASTM A204 Grade C: 4 in [100mm].
ASTM A204 Chemical Composition:
| Astm A204 Chemical Composition | ||||||
| Steel Grade | The Element Max (%) | |||||
| C | Si | Mn | P | S | Mo | |
| A204 Grade A | 0.18-0.25 | 0.13-0.45 | 0.90-0.98 | 0.035 | 0.035 | 0.45–0.60 |
| A204 Grade B | 0.20-0.27 | 0.13-0.45 | 0.90-0.98 | 0.035 | 0.035 | 0.45–0.60 |
| A204 Grade C | 0.23-0.28 | 0.13-0.45 | 0.90-0.98 | 0.035 | 0.035 | 0.45–0.60 |
ASTM A204 Mechanical Property:
| Mechanical Property of ASTM A204 steel plate | Grade A | Grade B | Grade C |
| Tensile strength, kis [MPa] | 65-85 [450-585] | 70-90 [485-620] | 75-95 [515-655] |
| Yield strength, min, kis [MPa] | 37 [255] | 40 [275] | 43 [295] |
| Elongation in 8 in. [200 mm], min, % | 19 | 17 | 16 |
| Elongation in 2 in. [50 mm], min, % | 23 | 21 | 20 |
ASTM A204 Equivalent steel grade:
| ASTM | GB | JIS | DIN | EN | |||||
| Steel Grade | Steel Grade | Steel Grade | Standard Number | Steel Grade | Material Number | Standard Number | Steel Grade | Material Number | Standard Number |
| A204-Gr. A.B | 16Mo | 16Mo | G3103 | 15 Mo3 | 1.5414 | DIN17155 | 16Mo3 | 1.5415 | EN 10028-2 |
CG Steel provides ASTM A204 steel plates, available either from our existing stock or sourced from reputable steel mills. Additionally, we offer steel fabrication services, allowing for various processes such as cutting (to any size and shape), drilling, welding, milling, and machining, tailored to your specifications. Our steel mills employ skilled fabricators with 5-10 years of experience. If you are considering the purchase of ASTM A204 steel plate products, feel free to reach out to us for the most up-to-date pricing or refer to the table below for equivalent steel grades of ASTM A204.
