What is the Chinese equivalent of NiCr 40/20 or Ni40Cr20?

GB Cr20Ni35. NiCr 40/20 has Ni ≥37.0%, Cr 18–22%, Si 1.8–3.0% and resistivity ≈1.05 μΩ·m; GB Cr20Ni35 has Ni 34.0–37.0%, Cr 18.0–21.0%, Si 1.00–3.00% and resistivity 1.04 μΩ·m. The two overlap across the composition range.

Is there a grade called Cr20Ni40 in the Chinese standard?

No. GB/T 1234 does not define Cr20Ni40. Some Chinese suppliers use it as a commercial name, but the standardised grade is Cr20Ni35.

Does NiCr 40/20 have an ASTM or DIN number?

No. It has no ASTM, UNS, Werkstoff or DIN designation — it is an industry trade grade.

Can NiCr 40/20 be used in a sulphur-bearing atmosphere?

No. All nickel-chromium grades are unsuitable in sulphur atmospheres. Use FeCrAl instead.

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Industrial Furnaces & Matched Element Supply

Short answer: we supply heating elements, radiant tubes, furnace furniture and insulation as a matched set for one furnace, so that all the parts are chosen against the same duty rather than bought separately.

The most common furnace failure is a mismatch, not a bad part
A furnace is usually assembled from parts bought at different times from different suppliers. The element is sized for one power, the insulation for another, the fan for a third. Nothing is individually wrong, but the set does not add up — and the symptom looks like a bad element. Supplying the set against one duty sheet removes that failure mode.

1. What we match

System	What we select	What it depends on
Heating elements	Grade, wire or strip, diameter/thickness, developed length, surface load	Furnace temperature, atmosphere, power, voltage
Radiant tubes	Tube material, wall thickness, element inside, burner or electric	Load temperature, immersion or radiant duty
Furnace furniture	Trays, baskets, rollers, skids, fans	Load weight, temperature, cycling
Insulation	Fibre type, thickness, density, anchoring	Shell temperature target, atmosphere, vibration
Thermocouples	Type, sheath, diameter, position	Control range, atmosphere, response time

2. The duty sheet

Everything above is decided by one sheet of numbers. If you can answer these, we can size the whole set:

Furnace type and chamber size
Maximum and working temperature
Atmosphere (air, endothermic, nitrogen, hydrogen, vacuum)
Power supply: voltage, phases, connection
Load: material, weight per charge, and how it is supported
Cycle: continuous or intermittent, and the heating rate

3. Please confirm these 3 points before ordering

The duty sheet above — even partially filled is useful.
What already exists — so we match rather than redesign where that is cheaper.
Whether you want the parts separate or pre-assembled — radiant tubes are usually assembled at our works and shipped complete.

Need a quotation?

Send grade, form, size with tolerance and quantity — we reply within one working day (GMT+8).

WhatsApp +86 180 6103 5177 Enquiry form

About Taizhou Aolante Alloy

Taizhou Aolante Alloy Materials Co., Ltd. was founded in 2010 and is a source manufacturer of electric heating alloys, precision resistance alloys and furnace accessories. Production base in Taixing, Taizhou, Jiangsu, approximately 20,000 m², 48+ pieces of melting, forging, rolling, drawing, heat-treatment and testing equipment, 200+ staff, annual capacity about 7,500 tonnes.

Our range covers heating wire and strip, heating cable, wide thin strip, radiant tubes, heat-resistant steel, conveyor belts, superalloys, industrial furnaces, thermocouples, refractory insulation, heating tubes, CuNi/MnCu alloys, far-infrared quartz tubes.

Contact: Tel +86 180 6103 5177 / +86 523 8751 8610 | Email althjcl@126.com

Grade cross-references are commercial equivalents, not a guarantee of interchangeability. Final acceptance is subject to the composition sheet agreed at order.