Nichrome 80:20, 70:30, 60:15, 40:20, 30:20 & 20:25 Foil: Precision Resistance Heating Solutions

UNS N06023, ASTM B344, DIN 2.4869 standards for chemical processing, power generation, and OEM furnace elements.

Table of Contents:

When Furnace Element Failure Costs Millions

A Mumbai-area pharma drying oven suffered complete element burnout during peak production, losing $1.2 million in batch rejections and downtime. Standard Kanthal wire embrittled after 8 months of cyclic 1100°C operation. Switching to Nichrome 80:20 foil (UNS N06023, ASTM B344) restored uniform heating, achieving 24+ months continuous service. Over 80% of modern vacuum furnaces now specify NiCr foils for predictable resistivity and oxidation life.

Specifications and Standards Compliance

Primary Grades

  • 80:20 (NiCrA): UNS N06023, ASTM B344, DIN 2.4869
  • 70:30 (NiCrB): ASTM B344, EN 2.4867
  • 60:15 (NiCrC): DIN 2.4870

Specialty Grades

  • 40:20 (NiCrD): ASTM B344
  • 30:20, 20:25: Custom furnace ratios
IEC 60335 CertifiedRoHS Compliant
Foil tested per ASTM B167 resistivity, IEC 60112 tracking resistance for pharma cleanroom certification.

Product Forms and Availability

Ultra-thin foils (0.01-0.15 mm) for rapid heating; ribbons to 25 mm wide. Oxide-coated for extended emissivity. Titanium Grade 5 UNS R56400 ASTM B265 complements lower-temp marine heating.

  • Foil: 8-610 mm width, ±1% tolerance
  • Ribbon: Flat, edged configurations
  • Coils: 5-500 kg, vacuum packed

Equivalent Grades Worldwide

  • 80:20: Nikrothal 80, Chromel A, H23N13
  • 70:30: Stablohm 710, Nikrothal 70
  • 60:15: Nikrothal 60, Tophelon C
  • 40:20: Nikrothal 40

Chemical Composition by Grade

GradeNi (%)Cr (%)Fe (%)Others
80:2080.020.0<1.0-
70:3070.030.0<1.0-
60:1560.015.023.0-
40:2040.020.0BalSi 1.0
30:2030.020.0Bal-
20:2520.025.0Bal-

Higher Cr grades excel in sulfidizing atmospheres; Fe-balanced grades optimize cost for power generation.

Industry Applications and Performance Advantages

Chemical Processing & Pharma

80:20 foil prevents carburization in ethylene crackers; 3x oxide life vs FeCrAl in H2 atmospheres.

Power Generation

60:15 grade for economizer tubes; maintains resistivity after 18,000 hours of sulfur exposure.

Oil & Gas, Marine

40:20 resists chloride pitting in platform heaters better than SS310.

OEM/Fabricators

Formable foils enable complex wound elements; 70:30 for high-vibration automotive.

Vs FeCrAl and Kanthal Alternatives

Property @1100°CNichrome 80:20Kanthal A1PM FeCrAl
Life (hours)12,0008,50015,000
Emissivity0.950.750.85
WeldabilityExcellentPoorFair
Cyclic ShockSuperiorGoodModerate

Nichrome dominates industrial furnace applications requiring fabrication flexibility.

Global Export Destinations

We ship worldwide from Mumbai. See every destination we export to on our export markets page.

Domestic Supply Network

We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.

Reliable Heating Performance You Can Specify

Nichrome foils deliver decades-proven resistivity stability, oxidation resistance, and fabricability across the full temperature spectrum. Standards compliance and testing traceability give procurement confidence for critical heating applications worldwide.

Which Nichrome grade matches your exact operating requirements?