China Low Temperature Fasteners suppliers - Factory for -270℃ to 0℃ Stainless Steel and Alloy Solutions

Our company is a leading supplier in China, providing low-temperature fasteners designed to perform in extreme conditions, with a temperature range of -270℃ to 0℃. The most commonly used low-temperature fastener operates at -196℃, making them ideal for applications in LNG, liquid oxygen, and liquid nitrogen systems, as well as in cryogenic treatment equipment and laboratory setups. Manufactured from high-quality stainless steel and specialized alloys, our fasteners ensure reliability and performance in critical environments. Partner with our factory for top-tier low-temperature fasteners that meet your industry's needs

Product Description

Products Features

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1. Low Temperature Stability

Maintains high strength even below -60℃, preventing brittle fracture. Suitable for liquefied natural gas pumps and liquid nitrogen pumps.

Carbon steel or alloy steel (35CrMoA/42CrMoA) with body-centered cubic crystal structure can have hardness and impact performance optimized through tempering heat treatment.

For A-286 stainless steel screws at -275℉ (-170℃), thermal contraction increases thread friction and improves locking performance.

Glass fiber/epoxy resin composite joints show 15% higher load-bearing capacity at -40℃ vs. room temperature, with more significant pre-tightening torque effect.

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2. Resistance to Corrosion

Stainless steel fasteners (per ISO 3506-1 standard) possess both corrosion resistance and mechanical properties in low-temperature environments.

Wind turbine bolts (10.9/12.9 grade) withstand multi-axis stress and dynamic loads while avoiding brittle fracture at low temperatures.

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3. Ease of Installation

The low-friction coefficient design facilitates installation and disassembly in low-temperature environments, reducing operational complexity and maintenance time.

Application Fields

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Aerospace
Rocket fuel storage tanks, liquid hydrogen/liquid oxygen pipeline connections. Wind tunnel models employ low-temperature locking devices that enhance connection stability through the thermal contraction effect.
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LNG and Energy
LNG storage tanks, transport ships and pipeline flange connections (working temperatures as low as -162°C). Liquid nitrogen/liquid helium storage equipment.
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Superconductivity
Cryogenic support structures of superconducting magnets (MRI equipment). Cryogenic thermostats of quantum computers operating close to absolute zero.
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Cold Chain Logistics
Fixed shelves for ultra-low temperature cold storage (-80°C). Liquid nitrogen quick-freezing equipment conveyor belt fasteners.

Main Types of Low Temperature Fasteners

Digital Grade Material Executive Standard Withstand Temperature
1.113320Mn5—-20℃
1.658234CrNiMo6DIN EN 10269-40℃
1.658030CrNiMo8DIN EN 10269-40℃
1.552319MnB4—-60℃
1.721825CrMo4—-60℃
1.722542CrMo4—-100℃
1.5680X12Ni5DIN EN 10269-120℃
2.4952NiCr20TiAIDIN EN 10269-196℃
1.4401X5CrNiMo17-12-2—-196℃
2.4856Alloy 625ASTM B446/B564-196℃
2.4668Alloy 718DIN EN 10269-273℃
1.4980Alloy 286ASTM 453-273℃
1.4571AISI 316TiDIN EN10088-273℃
1.4429AISI 316LNDIN EN10269-273℃

Frequently Asked Questions

❓What are low temperature fasteners?
Low temperature fasteners are specially engineered bolts and nuts designed to maintain mechanical integrity and resist brittle fracture at temperatures down to -273℃. They are made from materials like austenitic stainless steels and nickel alloys that retain toughness in cryogenic conditions.
❓Which materials are most commonly used?
Common materials include austenitic stainless steels (1.4301, 1.4404), nickel-based superalloys (Alloy 718, Alloy 625, Alloy 286), and specific low-alloy steels like 34CrNiMo6. The choice depends on the specific service temperature and load.
❓What is the lowest operating temperature possible?
Certain grades such as Alloy 718 (2.4668) and Alloy 286 (1.4980) are rated for use at -273℃ (near absolute zero), making them ideal for quantum computing and superconductivity applications.
❓What industry standards apply to these products?
They are manufactured according to international standards including DIN EN 10269, ASTM B446/B564/B637, ISO 3506-1, and DIN EN10088/10272, ensuring reliability in extreme environments.
❓In which industries are they most widely used?
They are critical in aerospace (rocket systems), LNG energy (storage and transport), medical technology (MRI magnets), and cold chain logistics (ultra-low temperature storage).
❓How does cold affect locking performance?
At low temperatures, thermal contraction increases thread friction, which typically improves the self-locking performance of fasteners. For instance, A-286 screws show enhanced stability at -170℃ due to this contraction effect.

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