UNS K93600 Alloy Steel Plate Supplier | Specifications, Equivalent Materials, and Price

 

When you need a material that stays rock-solid in size no matter the temperature, UNS K93600 alloy steel plate, also known as Invar 36, is the answer.

Supplied by Gangsteel, a trusted stainless steel supplier in China, this nickel-iron alloy is renowned for its UNS K93600 low thermal expansion, making it perfect for precision instruments, aerospace components, and cryogenic applications.

Gangsteel offers UNS K93600 plate, sheet, bar, and custom components, meeting ASTM F1684 and ASME SF1684 standards. This page dives into the UNS K93600 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive UNS K93600 price per kg. Explore our nickel alloy steel grades for related alloys like UNS N06625, UNS N08031, and UNS R20033.

 

1. What is UNS K93600?

UNS K93600, or Invar 36, is a nickel-iron alloy with 36% nickel, engineered for an exceptionally low coefficient of thermal expansion (CTE) of ~1.2 µm/m·K, ensuring dimensional stability from -250°C to 200°C. This makes UNS K93600 material ideal for precision applications like telescope mirrors, cryogenic systems, and aerospace tooling. Compared to UNS N08031, which focuses on corrosion resistance, UNS K93600 prioritizes dimensional stability, with moderate corrosion resistance in atmospheric conditions.

Gangsteel’s UNS K93600 alloy steel plate is designed for projects where precision is non-negotiable, offering a reliable alternative to nickel alloy steel grades like UNS N06625 or UNS N04400.

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2. UNS K93600 Chemical Composition

The UNS K93600 chemical composition, compliant with ASTM F1684, is optimized for minimal thermal expansion.

Element

Percentage (%)

Nickel (Ni)

35.0 – 37.0

Iron (Fe)

Balance (~62%)

Manganese (Mn)

≤ 0.5

Silicon (Si)

≤ 0.25

Carbon (C)

≤ 0.05

Phosphorus (P)

≤ 0.02

Sulfur (S)

≤ 0.015

Chromium (Cr)

≤ 0.2

Cobalt (Co)

≤ 0.5

Note: The controlled nickel content ensures UNS K93600’s low CTE, making it ideal for precision applications compared to UNS R20033, which focuses on corrosion resistance.

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3. UNS K93600 Mechanical Properties

The UNS K93600 mechanical properties, tested per ASTM F1684, provide adequate strength and machinability for precision applications.

Property

Value at 20°C

Value at 204°C (400°F)

Tensile Strength (MPa)

400 – 550 (58-80 ksi)

~350 (51 ksi)

Yield Strength (MPa)

240 – 300 (35-44 ksi)

~200 (29 ksi)

Elongation (%)

~30

~35

Hardness (HRB)

~70

-

Density

8.05 g/cm³ (0.291 lb/in³)

-

Note: Annealing at 830-870°C (1526-1598°F) optimizes Invar 36 mechanical properties. Contact Gangsteel for a detailed UNS K93600 technical data sheet.

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4. UNS K93600 Allowable Stress

The allowable stress values for UNS K93600, per ASME BPVC Section II, Part D, ensure reliable performance in precision applications.

Temperature (°C)

Allowable Stress (MPa)

100

160

200

140

300

120

400

100

500

80

Note: These values ensure UNS K93600 material maintains dimensional stability in precision instruments and cryogenic systems.

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5. UNS K93600 Equivalent Materials

UNS K93600aligns with international standards for global compatibility.

Standard

Grade

UNS

K93600, K93603

W.Nr.

1.3912

EN

Ni36

ASTM

F1684

ASME

SF1684

AFNOR

NF A54-301 (chemistry only)

Note: UNS K93600 equivalent grades comply with ASTM F1684, offering interchangeability with alloys like UNS K94100 (Alloy 42) for less stringent applications.

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6. UNS K93600 vs UNS N08031, UNS N06625, and SS316

Choosing the right material for your project can save time and money. Here’s how UNS K93600 stacks up against UNS N08031, UNS N06625, and SS316:

Property

UNS K93600 (Invar 36)

UNS N08031 (Alloy 31)

UNS N06625 (Alloy 625)

SS316/316L

UNS Number

K93600

N08031

N06625

S31600/S31603

Nickel Content

35.0-37.0%

30.0-32.0%

~58%

10.0-14.0%

Chromium Content

≤ 0.2%

26.0-28.0%

20.0-23.0%

16.0-18.0%

Molybdenum Content

-

6.0-7.0%

8.0-10.0%

2.0-3.0%

Additional Elements

Fe (~62%)

Cu, N

Nb, Ti

-

Key Property

Low CTE (~1.2 µm/m·K)

Excellent corrosion resistance, PREN ~48

Excellent corrosion/strength

General corrosion resistance

Strength

Moderate

Moderate

High

Moderate

Temp Range

-250°C to 200°C

Up to 500°C (932°F)

Up to 1000°C (1832°F)

Up to 870°C (1600°F)

Cost (USD/kg)

25-45

25-40

40-60

5-15

Applications

Precision instruments, aerospace

Chemical, fertilizer

Aerospace, nuclear

Food, pharma

  • UNS K93600 vs UNS N08031: UNS K93600 is unmatched for low thermal expansion in precision applications, while UNS N08031 excels in corrosive acid environments.
  • UNS K93600 vs UNS N06625: UNS N06625 offers high strength and corrosion resistance for high-temperature applications, while UNS K93600 is tailored for dimensional stability.
  • UNS K93600 vs SS316: UNS K93600 provides superior dimensional stability, while SS316 is better for general corrosion resistance at a lower cost.

Conclusion: Choose UNS K93600 alloy steel plate for precision applications requiring minimal thermal expansion, UNS N08031 for acid corrosion resistance, UNS N06625 for high-temperature strength, or SS316 for cost-effective general use.

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7. UNS K93600 Specifications

Gangsteel provides UNS K93600 alloy steel plate, sheet, bar, and custom components to meet your exact project needs:

7.1 Plate and Sheet

  • Thickness: 0.5 mm to 50 mm (plate), 0.025 mm to 4 mm (sheet)
  • Width: 500 mm to 2500 mm
  • Length: 2000 mm to 12000 mm (or coiled for sheet)
  • Surface Finish: Hot-rolled, cold-rolled, annealed, descaled, or customized
  • Standards: ASTM F1684, ASME SF1684
  • Applications: UNS K93600 plate for aerospace tooling, Invar 36 sheet for telescope mirrors

7.2 Bar

  • Diameter: 6 mm to 300 mm
  • Length: Up to 6000 mm
  • Finish: Hot-rolled, cold-drawn, centerless ground
  • Standards: ASTM B753, ASME SB-753
  • Applications: UNS K93600 bar for precision shafts and optical mounts

7.3 Custom Components

  • Types: Flanges, fittings, CNC-machined parts
  • Tolerances: ±0.05 mm for precision components
  • Applications: Tailored solutions for aerospace and cryogenic systems

Note: Need a specific size or finish? Gangsteel offers custom solutions, including annealing at 830-870°C. Contact us for bespoke UNS K93600 material specifications.

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8. UNS K93600 Applications

UNS K93600is the go-to material when precision and stability are critical. Key UNS K93600 applications include:

  • Aerospace: UNS K93600 alloy steel plate for composite tooling and satellite components.
  • Precision Instruments: Invar 36 plate for telescope mirrors and laser systems.
  • Cryogenic Systems: UNS K93600 bar for LNG storage and transport components.
  • Electronics: UNS K93600 sheet for thermal management and lead frames.
  • Scientific Equipment: Components requiring minimal thermal expansion.

Note: Unlike UNS N06625, which focuses on high-temperature strength, UNS K93600 is optimized for dimensional stability in precision settings.

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9. UNS K93600 Price per KG

The UNS K93600 price per kg ranges from USD 25-45 per kg (FOB), driven by:

  • Alloy Content: 36% nickel keeps costs competitive compared to UNS N06059.
  • Market Demand: High demand in aerospace and precision industries drives Invar 36 price.
  • Product Form: UNS K93600 alloy steel plate may cost more than sheet due to processing.
  • Global Supply Chain: Freight and availability impact UNS K93600 cost.

For a precise UNS K93600 price per kg or bulk discounts, contact Gangsteel. We’ll help you stay within budget while meeting your project timeline.

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10. Related Alloy Steel Grades

Gangsteel offers a wide range of nickel alloy steel grades to complement UNS K93600 for various applications:

  • UNS N06625: High strength for aerospace and nuclear applications.
  • UNS N08031: Corrosion resistance for chemical processing.
  • UNS R20033: Corrosion resistance for mixed acid environments.
  • UNS N08028: Corrosion resistance for chemical processing.
  • UNS N10675: Resistance to hydrochloric acid.
  • UNS N06035: Resistance to phosphoric and nitric acids.
  • UNS N06030: Resistance to phosphoric acid.
  • UNS N06200: Resistance to sulfuric acid.
  • UNS N10276: Broad resistance to reducing/oxidizing acids.
  • UNS N06022: Resistance to oxidizing acids.
  • UNS N06690: Corrosion resistance for nuclear applications.
  • UNS N07718: High strength for aerospace.
  • UNS N07750: Creep resistance for springs.
  • UNS N06002: High-temperature strength for turbines.
  • UNS N06075: Cost-effective for high-temperature aerospace uses.
  • UNS N07080: High strength for aerospace and gas turbines.
  • UNS N07263: Weldable for gas turbine applications.
  • UNS N09901: High strength for aerospace components.
  • UNS N08810: Oxidation resistance for industrial furnaces.
  • UNS N08811: Enhanced creep resistance for high-temperature applications.
  • UNS N06059: Corrosion resistance for chemical industries.
  • UNS N08904: Corrosion resistance for chemical and marine applications.
  • UNS S31254: High corrosion resistance for seawater applications.
  • UNS N04400: Corrosion resistance for marine environments.
  • UNS N05500: High strength for marine applications.

Note: These alloys complement UNS K93600 alloy steel plate in precision, aerospace, and corrosion-resistant applications. Contact Gangsteel for a full catalog to find the perfect material for your project.

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11. Why Choose Gangsteel?

When precision and reliability are critical, you need a supplier who delivers quality and value. Here’s why Gangsteel is your trusted partner for UNS K93600:

  • Quality Assurance: Every UNS K93600 alloy steel plate meets ASTM F1684 and ASME SF1684 standards, backed by EN 10204 3.1/3.2 certificates for complete confidence.
  • Fast Delivery: Standard orders ship in 7-15 days, with expedited options to keep your project on schedule.
  • Customization: Need a specific size or shape? We offer precision cutting (CNC, laser, waterjet), machining, and tailored heat treatments.
  • Global Supply: We serve clients in Saudi Arabia, UAE, India, Europe, and beyond, ensuring reliable delivery wherever you are.
  • Extensive Inventory: Choose from our wide range of nickel alloy steel grades, including UNS N06625 and UNS R20033.

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12. Conclusion

For projects where dimensional stability is critical, UNS K93600 alloy steel plate from Gangsteel delivers unmatched performance. Its ultra-low thermal expansion makes UNS K93600 material the top choice for precision instruments, aerospace tooling, and cryogenic systems, outperforming UNS N08031 in applications where corrosion resistance takes a backseat to stability. Available in versatile specifications (0.5-50 mm thickness, up to 2500 mm width) and equivalent grades (W.Nr. 1.3912, EN Ni36), Gangsteel offers quality at a competitive UNS K93600 price per kg (USD 25-45/kg).

Contact Gangsteeltoday for a quick quote on UNS K93600 price per kg or to request a detailed Invar 36 technical data sheet. Browse our nickel alloy steel grades to find the perfect solution for your precision needs!

 

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