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 › Superalloys for Furnace Parts

Superalloys for Furnace Parts

Short answer: we supply nickel-based and iron-based superalloys — Inconel 600/601/625, Incoloy 800H/825/901, Hastelloy C-276, and heat-resistant cast/wrought grades — as bar, plate, sheet, tube and formed parts.

Do you actually need a superalloy?
Superalloys cost several times what a heat-resistant stainless does. They earn their price when you need creep strength above 900 °C, resistance to a specific corrosive species, or strength that survives repeated thermal cycling. If the part simply runs hot in clean air, 310S or 253MA will often do the job for a fraction of the cost. Tell us the duty and we will tell you honestly which side of that line you are on.

1. Common grades and where they fit

Family	Grades	Typical capability	Furnace use
Iron-based	Incoloy 800H / 800HT	Good creep strength to ≈ 1,100 °C in air	Furnace tubes, muffle, trays
Iron-based	Incoloy 825	Excellent against reducing acids and chloride	Pickling and chemical service
Nickel-based	Inconel 600 / 601	Oxidation resistance to ≈ 1,200 °C	Retorts, radiant tubes, baskets
Nickel-based	Inconel 625	High strength plus corrosion resistance	Severe combined duty
Nickel-based	Hastelloy C-276	Very broad chemical resistance	Wet chlorine, mixed acids
Heat-resistant steel	310S, 253MA, 309S	Good to ≈ 1,150 °C at much lower cost	Furniture, trays, supports

2. Forms

Form	Range
Bar / rod	φ10 – 200 mm (dimensions to order)
Plate / sheet	thickness 1 – 100 mm
Tube / pipe	OD 6 – 219 mm
Formed parts	trays, baskets, fixtures, to drawing

3. What a superalloy choice really hinges on

Temperature and time — creep is a time-at-temperature problem, not a peak-temperature problem.
Atmosphere — oxidation, carburisation, sulphidation and chlorination each point to a different alloy family.
Thermal cycling — a part that cycles daily needs thermal-fatigue resistance, which is a different property from creep strength.
Whether the part is structural — a tray that only holds parts has very different requirements from a load-bearing beam.

4. Please confirm these 4 points before ordering

Grade or duty — if you have a grade, give it; if not, give the temperature, atmosphere and whether it cycles.
Form and size — bar, plate, tube, or a drawing.
Quantity — superalloy is usually available in small quantities but priced accordingly.
Certification — mill certificate with heat number is standard; third-party inspection on request.

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.