High Quality Precision Alloy Kovar, Invar, Ni-Span C Pipe / Tube Manufacturers

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Your Professional precision alloy Pipe & Tube Supplier

Lork Group specializes in supplying precision alloy rods and bars. Common materials include Kovar, Invar, Ni-Span C, Elgiloy, P6, and HiperCo, etc. Our stock complies with ASTM, AISI, AMS, JIS, GB, and other relevant standards. These rods are commonly used in aerospace, medical, and industrial applications. We stock rod sizes ranging from Outside diameter: 6mm - 1219mm, Thickness: 0.5mm - 100mm, (Capillary Pipe: Outside diameter: 0.5mm - 6.0 mm, Thickness: 0.05mm - 2.0mm) with custom lengths available. From billets into square pipe, round tube, and related castings. Best of all, we support SGS third-party testing!

HyMu 80 Permalloy Alloy Tube
HyMu 80 permalloy tubes require strict control over nickel content (80%), molybdenum content (4-5%), proper final annealing (1177℃ dry hydrogen), and a magnetic performance report (μi≥20000) to be
Ni-Span C Alloy 902 (ASTM F30, UNS K94610)
Ni-Span C is a nickel-iron-chromium constant elasticity alloy. Its core value lies in the fact that its elastic modulus (Young's modulus E) changes very little within a certain temperature range
Permalloy 80 Pipe (ASTM A753，Ni80）
Permalloy is a type of nickel-iron soft magnetic alloy with extremely high permeability and extremely low coercivity. It is a magnetic highway that is extremely sensitive to external magnetic fields.
Invar 36 Alloy Pipe (ASTM F1684,FeNi36)
Lork Group stocks and supplies a wide range of Invar 36 materials, including Invar 36 Bar, Rod, Tube, Cold-Rolled Sheet, Hot-Rolled Plate, and Welding Wire.

Custom precision alloy Pipe & Tube

We offer custom precision alloy bar solutions to meet your project needs. Key customizable options include:

Material Type:

Soft magnetic alloys, expansion alloys, elastic alloys, etc.

Size:

Outside diameter: 6mm - 1219mm, Thickness: 0.5mm - 100mm, Customizable upon request.

Availability:

Solid solution state, aging state, precipitation hardening state, return state, etc.

Advantages of Precision Alloy Pipe & Tube

Higher strength & toughness:

ASTM F30 Invar 42 pipe can withstand higher stress loads and impact resistance than carbon steel.

Improved heat resistance:

ASTM F1684 Invar 36 tube can withstand high temperatures without weakening, making it suitable for use in aerospace and power generation applications.

Better wear resistance:

Precision Alloy(Kovar, Elgiloy, Sumispan-4, A286, Ceramvar). More durable in high-friction environments, making it ideal for bearings, tools, and machinery.

Corrosion resistance:

Precision Alloy (1J22, 1J50, Vicalloy, Ni-Span C) tubes, especially those with chromium, offer improved rust and oxidation resistance.

Types of Precision Alloy Pipe & Tube

Soft magnetic alloy tube:

Soft magnetic alloys are the most common precision alloys. Its advantages are easy magnetization, demagnetization, and good magnetic conductivity. Common grades are 1J50, 1J79, 1J85, 1J22, etc. This type of alloy is generally used in transformer cores, magnetic shielding, and sensors.

Elastic alloy pipe:

Elastic alloys are relatively special precision alloys with the advantage of excellent elastic properties. Common grades include 3J1, 3J53 (constant elasticity), etc. This type of alloy is generally used in instrument springs, mechanical filters, and watch hairsprings.

Expansion alloy pipe:

Expansion alloys are the most widely used precision alloys. Their advantage is controlled thermal expansion behavior. Common grades include 4J36 (low expansion) and 4J29 (constant expansion). These alloys are generally used in precision instruments and electronic packaging.

Precision Alloy pipe & tube Mechanical Properties

Properties	Metric	Imperial
Bulk modulus (typical for steels)	140 GPa	20300 ksi
Shear modulus (typical for steels)	80.0 GPa	11600 ksi
Elastic modulus	190-210 GPA	27557-30458 ksi
Poisson's ratio	0.27-0.30	0.27-0.30
Hardness, Brinell	208	208
Hardness, Knoop (converted from Brinell hardness)	230	230
Hardness, Rockwell B (converted from Brinell hardness)	94	94
Hardness, Rockwell C (converted from Brinell hardness, value below normal HRC range, for comparison purposes only)	15	15
Hardness, Vickers (converted from Brinell hardness)	218	218
Machinability (annealed and cold drawn, based on 100 machinability for AISI 1212 steel)	60	60

Quality Inspection Procedures

Spectrometer

Ultrasonic Testing

Stress Corrosion Testing

Microcopy

Mechanical

Eddy Current Test

Heat Treatment Furnace

Corrosion Test

Hydraulic Test

Metallographic Test

FAQ

Q: Is an alloy pipe as strong as steel?

A: Alloy pipes are more resistant to corrosion and can be used in high-temperature environments without fear of damage. Alloy steels can be heat-treated to increase their strength and hardness, making them even more durable. Alloy steels are generally stronger and tougher than carbon steels.

Q: What are the main benefits of using an alloy tube?

A: Alloy tubes offer superior strength, corrosion resistance, and high-temperature tolerance, making them suitable for heavy-duty industrial applications. Their enhanced mechanical properties improve durability and performance in demanding environments.

Q: How do different types of alloy pipe vary in their applications?

A: Low alloy tubes are ideal for structural applications and machinery components, while high alloy steel bars, including stainless steel, are used in aerospace, medical, and marine industries where corrosion resistance is essential.

Q: Why is precision machining important for alloy tubes?

A: Precision machining ensures that alloy tubes meet exact specifications, improving their fit, function, and performance in industrial applications. Processes such as bar chamfering and metal cutting enhance their usability and longevity.

Q: What industries benefit the most from alloy pipe?

A: Industries such as construction, aerospace, automotive, medical, and oil and gas rely heavily on alloy pipe for structural support, machinery components, and high-performance applications.

We're well-known as one of the leading precision alloy pipe / tube manufacturers in China. Please feel free to buy cheap precision alloy pipe / tube for sale here and get pricelist from our factory. For price consultation, contact us.

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