〖Delivery〗　　　中文版
1、Supply condition：
  Wires:
　　 All cold-drawn wires shall be delivered after annealing and acid picking. Alloy wires in coils shall be delivered after picking or in oxidizing colour.Alloy wires of small diameters shall be delivered in bright and smooth condition after annealing In shelteringgas.
  Strips:
　　Strips shall be delivered without acid picking unless the customers have special reqwirements .
  Ribbons:
　　Ribbons shall be delivered in bright and smooth condition after annealing in sheltering
gas.
2、Packing:
  　　Alloy wires of large diameters and strips shall be delivered in rolls and packed in cloth bags.Alloy wires of small diameters and ribbons shall be delivered in reels.
3、Can discuss any special requirements of export products and customers.
  • Main performance of Ni-Cr and Ni-Cr-Fe electric heating alloys-----------【back】
Cr20Ni80 Cr15Ni60 Cr20Ni35 Cr20Ni30
Main
Chemical
Composition
 Ni Rest 55.0-61.0 34.0-37.0 30.0-34.0
Cr 20.0-23.0 15.0-18.0 18.0-21.0 18.0-21.0
Fe ≤1.0 Rest Rest Rest
Max.continuous service
temp.of element(℃)		 1200 1150 1100 1100
Resistivity at 20℃
(Ω.mm2/m) 		1.09 1.12 1.0 1.04
Density(g/cm3) 8.40 8.20 7.90 7.90
(KJ/m.h.℃)
Thermal conductivity		 60.3 45.2 43.8 43.8
Coefficient of lineas
expansion(α×10-6/℃)		 18.0 17.0 19.0 19.0
Melting point(approx.)(℃) 1400 1390 1390 1390
%
Elongation at rupture		 >20 >20 >20 >20
显微组织
Micrographic structure		 奥氏体
austenite 		奥氏体
austenite		 奥氏体
austenite		 奥氏体
austenite
磁性
Magnetic properties		 非磁性
nonmagnetic 		非磁性
nonmagnetic 		弱磁性
weak magnetic 		弱磁性
weak magnetic

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