Product Description
ASTM A387 Boiler vessel plates are chrome-molybdenum alloy steel plates suitable for welding boilers and high temperature pressure vessels. ASTM A387 boiler container plate is divided into grade 5, grade 9, grade 11, grade 12, grade 22, grade 91 and other grades according to the alloy elements contained. Except for grades 21L, 22L, 91 and 911, each grade of ASTM A387 boiler vessel plate has two tensile strength categories according to its heat treatment: Class 1 and Class 2. A387 is a chromium-molybdenum alloy steel plate for pressure vessels. It has good high-temperature strength, oxidation resistance and sulfide corrosion resistance. The working environment of this material is harsh, and the working medium is reaction products such as hydrogen, hydrogen sulfide, wax oil, gasoline, diesel, and thermal synthesis gas, as well as raw oil.
Product Parameters
| Product Name | A387 Pressure Vessel Steel Plate |
| Production Process | Hot Rolling,Cold Rolling |
| Material Standards | AISI,ASTM,ASME,DIN,BS,EN,ISO,JIS,GOST,SAE,etc. |
| Width | 100mm-3000mm |
| Length | 1m-12m,or Customized Size |
| Thickness | 0.1mm-400mm |
| Delivery Conditions | Rolling,Annealing,Quenching,Tempered or Standard |
| Surface Process | Ordinary,Wire Drawing,Laminated Film |
Chemical Composition
| A387 | UNS | C | Mn | P | S | Si | Cr | Mo |
|---|
| Level 5 | S50200 | ≤ 0.15 | 0.25-0.66 | 0.025 | 0.025 | ≤ 0.55 | 3.90-6.10 | 0.40-0.70 |
| Level 9 | K90941 | ≤ 0.15 | 0.25-0.66 | 0.025 | 0.025 | ≤ 1.05 | 7.90-10.10 | 0.85-1.15 |
| Level 11 | K11789 | 0.04-0.17 | 0.35-0.73 | 0.025 | 0.025 | 0.44-0.86 | 0.94-1.56 | 0.40-0.70 |
| Level 12 | K11757 | 0.04-0.17 | 0.35-0.73 | 0.025 | 0.025 | 0.13-0.45 | 0.74-1.21 | 0.40-0.65 |
| Level 22 | K21590 | 0.04-0.15 | 0.25-0.66 | 0.025 | 0.025 | ≤ 0.50 | 1.88-2.62 | 0.85-1.15 |
| Class 22L | K21590 | ≤ 0.12 | 0.25-0.66 | 0.025 | 0.025 | ≤ 0.50 | 1.88-2.62 | 0.85-1.15 |
| Class 91 | K90901 | 0.06-0.15 | 0.25-0.66 | 0.025 | 0.012 | 0.18-0.56 | 7.90-9.60 | 0.80-1.10 |
Mechanical Properties
| A387 | Category | Tensile Strength Mpa | Yield Strength Mpa | Elongation Gauge length 2in. [50mm] % |
|---|
| Level 5 | Section Category 1 | 415-585 | 205 | 18 |
| Section Category 2 | 515-690 | 310 | 18 |
| Level 9 | Section Category 1 | 415-585 | 205 | 18 |
| Section Category 2 | 515-690 | 310 | 18 |
| Level 11 | Section Category 1 | 415-585 | 240 | 22 |
| Section Category 2 | 485-620 | 310 | 22 |
| Level 12 | Section Category 1 | 380-550 | 230 | 22 |
| Section Category 2 | 450-585 | 275 | 22 |
| Level 22 | Section Category 1 | 415-585 | 205 | 18 |
| Section Category 2 | 515-690 | 310 | 18 |
Physical Performance
| Physical Performance | Metric | Imperial |
|---|
| Density | 7.7 - 8.03 g/cm3 | 7.7 - 8.03 g/cm3 |
Equivalent Material
| American Standard ASTM | European Standard ASME | German Standard EN 10028 | English standard DIN | Legal standard BS | Russian standard AFNOR 36206 |
|---|
| A3875 | SA3875 | X12CrMo5 | - | - | - |
| A3879 | SA3879 | - | - | - | - |
| A38711 | SA38711 | 13CrMoSi5-5 | - | 621B | - |
| A38712 | SA38712 | 13CrMo4-5 | 13CrMo44 | 620B | 15CD2.05 |
| A38722 | SA38722 | 10/11CrMo9-10 | 10CrMo9-10 | 622-515B | 12CD9-10 |
| A38791 | SA38791 | 10CrMoVNb9-1 | - | -- | - |
