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 › Pure Nickel Strip (Battery Tab & Busbar Material)

Pure Nickel Strip (Battery Tab & Busbar Material)

Short answer: we roll pure nickel strip in Ni200, Ni201, N4 and N6, thickness 0.05 - 3.5 mm, width 2 - 300 mm, slit with a burr-free edge, in coils.

What battery tab work actually needs
Thickness uniformity, not just thickness tolerance. A coil can pass inspection and still cause trouble if it varies from 0.08 to 0.11 mm across its width — the weld penetration on the tab then differs from edge to edge, and you find out at the ultrasonic welding station. Ask for the within-coil thickness spread as well as the tolerance.

1. Grades

Grade	Ni %	ρ20 (μΩ·m)	Typical use
Ni200	≥99.6	0.096	General battery tabs, busbars
Ni201	≥99.0 (low C)	0.096	Where welded joints see higher temperature
N4	≥99.9	0.096	High-purity requirement
N6	≥99.5	0.096	General purpose

2. Size range and tolerance

Item	Range	Tolerance
Thickness	0.05 - 3.5 mm 0.002" - 0.138"	±0.02 mm (<0.2 mm) ±0.03 mm (0.2-1.0 mm) ±0.05 mm (>1.0 mm)
Within-coil thickness spread	-	≤5 % of nominal (tighter on request)
Width	2 - 300 mm 0.079" - 11.8"	±0.15 mm (<20 mm) ±0.25 mm (20-100 mm) ±0.40 mm (>100 mm)
Edge	-	Slit, burr height ≤0.02 mm, deburred
Camber (bow)	-	≤2 mm per metre
Condition	-	Annealed soft (typical for tabs)
Coil	-	ID 300 mm, 20-80 kg, interleaved

3. Weight per metre

Thickness × width	Weight per metre	Metres per kg
0.10 × 5 mm	4.45 g/m	225 m
0.15 × 8 mm	10.7 g/m	94 m
0.20 × 10 mm	17.8 g/m	56 m
0.30 × 20 mm	53.4 g/m	19 m

Basis: density 8.9 g/cm³. Weight per metre = thickness × width × 8.9 ÷ 1000 (mm, kg/m).

4. Please confirm these 4 points before ordering

Thickness with tolerance, and the within-coil spread you can accept — this is the parameter that affects welding yield.
Edge quality — burr-free is standard for tab work; say if you need a rounded or coined edge.
Temper — soft annealed is usual for tabs. Half-hard holds shape better if you are blanking complex shapes.
Certificate — composition per heat number, plus dimensional record if required.

Need a quotation?

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

WhatsApp +86 136 6174 5686 Enquiry form

About Shanghai Xinxiang Alloy

Shanghai Xinxiang Alloy Materials Co., Ltd. was founded in 2014 and is a source manufacturer of electric heating alloys and nickel-based precision alloys. Production base in Taixing, 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.

Contact: Tel +86 136 6174 5686 / +86 21 6911 6339 | Email shryhjcl@126.com

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