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.

Home › Products › Wide & Thin Alloy Strip

Wide & Thin Alloy Strip

Short answer: we roll thin strip down to 0.02 mm and up to 300 mm wide in FeCrAl, NiCr and pure nickel, bright annealed, slit and deburred, in coils wound to your direction.

At 0.05 mm, flatness is a handling problem, not a rolling problem
A thin strip can leave our works flat and arrive waved. The usual cause is uncoiling direction: if the coil is opened against its winding direction, the residual stress reverses and the edges lift. We mark the winding direction on every coil core and ship with interleaving paper. Please open in the marked direction.

1. Thickness and width

Thickness	Typical width	Tolerance
0.02 – 0.05 mm 0.0008" – 0.002"	2 – 100 mm	±0.003 mm
0.05 – 0.20 mm 0.002" – 0.008"	2 – 200 mm	±0.005 mm
0.20 – 1.00 mm 0.008" – 0.039"	2 – 300 mm	±0.02 mm
1.00 – 3.50 mm 0.039" – 0.138"	2 – 300 mm	±0.05 mm

2. Quality attributes that matter

Attribute	What we control	Why
Camber (bow)	≤2 mm per metre	A bowed strip will not run straight in a forming die
Burr height	≤0.02 mm, deburred	Burrs cause die wear and short circuits in etched parts
Thickness spread in one coil	≤5% of nominal	Uniform resistance and uniform weld penetration
Surface	Bright annealed, no scale, no roll marks	Etching, plating and welding all need a clean surface
Winding direction	Marked on core, interleaved	Prevents edge wave on uncoiling

3. Typical uses

Catalytic converter and exhaust-gas substrate carriers
Battery tabs and busbars (pure nickel)
Precision resistors and shunts (CuNi / MnCu)
Heating elements for appliances and small furnaces
Etched and photo-chemical-machined parts

4. Please confirm these 4 points before ordering

Grade, thickness and width with tolerance — and whether the tolerance is point-to-point or a coil average.
Flatness and camber requirement — tighter flatness needs low-tension rewinding and is priced accordingly.
Coil weight and core diameter — so it fits your uncoiler.
Edge condition — slit, deburred, or rounded.

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.