ASME SA387 Molybdenum Round Bar
SA-387 is a chromium-molybdenum alloy steel, which has the ability to prevent hydrogen embrittlement, hydrogen corrosion, hydrogen stripping, sulfide corrosion in the hydrogen-exposed environment in the medium temperature (350 ~ 480 ℃), at the same time, it has a good low tempering brittleness, and it is widely used in the manufacture of fertilizers, petrochemicals, and coal-fired power plants, such as ammonia reactors, coal gasification furnaces, converter furnaces, and hydrogenation reactors.
sA387 molybdenum round steel chemical composition
|
SA387/ASTM A387 |
Grade 5 |
Grade 9 |
Grade 11 |
Grade 12 |
Grade 22 |
|
Carbon |
0.15 max |
0.15 max |
0.04 – 0.17 |
0.04 – 0.17 |
0.04 – 0.15 |
|
Manganese |
0.25 – 0.66 |
0.25 – 0.66 |
0.35 – 0.73 |
0.35 – 0.73 |
0.25 – 0.66 |
|
Phosphorous |
0.035 |
0.030 |
0.035 |
0.035 |
0.035 |
|
Sulfur |
0.030 |
0.030 |
0.035 |
0.035 |
0.035 |
|
Silicon |
0.55 max |
1.05 max |
0.44 – 0.86 |
0.13 – 0.45 |
0.5 max |
|
Chromium |
3.9 – 6.1 |
7.9 – 10.1 |
0.94 – 1.56 |
0.74 – 1.21 |
1.88 – 2.62 |
|
Molybdenum |
0.40 – 0.7 |
0.85 1.15 |
0.40 – 0.7 |
0.4 – 0.65 |
0.85 – 1.15 |
sA387 molybdenum steel round bar mechanical property
|
A 387 Grade 5 |
A 387 Grade 9 |
A 387 Grade 11 |
A 387 Grade 12 |
A 387 Grade 22 |
||||||
|
Class 1 |
Class 2 |
Class 1 |
Class 2 |
Class 1 |
Class 2 |
Class 1 |
Class 2 |
Class 1 |
Class 2 |
|
|
Tensile |
60-85 |
75-100 |
60-85 |
75-100 |
60-85 |
70-90 |
50-80 |
65-85 |
60-85 |
75-100 |
|
Strength (ksi) |
||||||||||
|
Tensile |
415-585 |
515-690 |
415-585 |
515-690 |
415-585 |
485-620 |
380-550 |
450-585 |
415-585 |
515-690 |
|
Strength (MPa) |
||||||||||
|
Yield |
30 |
45 |
30 |
45 |
35 |
45 |
33 |
40 |
30 |
45 |
|
Strength (ksi) |
||||||||||
|
Yield |
205 |
310 |
205 |
310 |
240 |
310 |
230 |
275 |
205 |
310 |
|
Strength (MPa) |
||||||||||
|
Elongation |
19 |
18 |
18 |
19 |
||||||
|
in 200mm (%) |
||||||||||
|
Elongation |
18 |
18 |
18 |
18 |
22 |
22 |
22 |
22 |
18 |
18 |
|
in 50mm (%) |
||||||||||
|
Reduction of |
45 |
45 |
45 |
45 |
45 |
45 |
||||
molybdenum alloy steel rounds Products Details
Platinum bar requirements: forging molybdenum bar skin allows oxide film and slight traces of forging hammer, polished molybdenum bar surface is metallic luster, no significant oxidation phenomenon; both surfaces should not be delamination, cracks, burrs and longitudinal cracks and other defects
Uses: used in the manufacture of electric vacuum parts, guide rods, electrodes, lead wires, high-temperature parts, furnace heating rod heaters, etc.
sA387 molybdenum alloy round metal bar product image
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