Hubei Fotma Machinery Co., Ltd. |
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High Purity Molybdenum Rods Molybdenum Screws / Fasteners M2 M3 M5
M6 Furnace Parts
Molybdenum screws / bolts are produced for high temperature
vacuum environments. We produce three head types (fillister, pan
& flat) in both ANSI and metric sizes. We stock these
refractory screws in standard lengths, but can also produce
customized lengths and features.
Pure molybdenum is useful in many high temperature applications
where high melting points are required. Molybdenum also exhibits
good strength at elevated temperatures making moly useful in
furnace, aerospace, and similar applications. And Molybdenum's good
thermal and electrical conductivity and low coefficient of
expansion make it a useful metal in electronic/electrical and
glass-to-metal sealing applications.
Moly Screws Features:
Working temperature: 1700°C
Purity: 99.95% Molybdenum
Density: 10.2 g/cc
High thermal conductivity and heat resistance, excellent electrical
conductor, long use life, can be used as weight balance.
Standard: DIN, ASME/ANSI, ISO
Sizes range: M2,M3,M4,M5,M6,M8,M10 , 5/16, 3/8, 9/16, 7/16,
etc
Applications of Molybdenum Bolts / Screws:
LED, Furnace. Semiconductor, MOVCD, High temperature
furnace, Sapphire Ingot growth furnace hot zone parts, Ion
implanter consumables components.
Molybdenum Screws / Fasteners Advantages:
1) High melting point, high strength,
2) Outstanding thermal conductivity,
3) Excellent resistance to oxidation at high temperatures,
4) Excellent resistance to electrochemical corrosion
Standards of Molybdenum Screws / Fasteners:
Item No. | DIN-Standard | Description in English | ISO-Standard | GB-Standard |
1 | DIN 1 | Taper pins | ISO2339 | GB117 |
2 | DIN7 | Parallel pins | ISO2339 | GB119-86 |
3 | DIN84 | Slotted cheese head screw | ISO1207 | GB65-85 |
4 | DIN125-A | Plain washers | ISO7089 | GB97.1-85 |
5 | DIN125-B | Medium washers | ISO7090 | GB97.2-85 |
6 | DIN126 | Plain washers | ISO7091 |
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7 | DIN558 | Hexagon screws | ISO4018 |
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8 | DIN601 | Hexagon blots | ISO4016 |
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9 | DIN923 | Slotted pan head screw with shoulder |
| GB830-88 |
10 | DIN931 | Hexagon head screws | ISO4014 | GB5782-86 |
11 | DIN933 | Hexagon head screws | ISO4017 | GB5783-86 |
12 | DIN934 | Hexagon full nuts | ISO4032 | GB6170-86 |
13 | DIN935 | Hexagon slotted and castle nuts | ISO7035 | GB6178-86 |
14 | DIN7972 | Countersunk flat head tapping screws with slot | ISO1482 | GB5283-85 |
Testing Report of Molybdenum:
Element | Ni | Mg | Fe | Pb | Al | Bi | Si | Cd | Ca | P |
Concentration(%) | 0.003 | 0.002 | 0.005 | 0.0001 | 0.002 | 0.0001 | 0.002 | 0.0001 | 0.002 | 0.001 |
Element | C | O | N | Sb | Sn |
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Concentration(%) | 0.01 | 0.003 | 0.003 | 0.0005 | 0.0001 |
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Purity(Metallic Base) Mo≥99.95% | ||||||||||
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