Bars - Supra 50 - FeNi480 pages

Bar
Magnetic Alloys application

Supra 50
This grade concern all the common application (typical coercive fiel value: Hc = 5A/m).
The high performance level and the chemical purity make this alloy particularly suitable for applications requiring high
sensitivity and great accurary.
1. Chemical content

3. Applications

UNS K94800

Wr 1.3922

Ni

Fe

46 - 49

•
•
•

Bal.

Safety valves, resolvers, actuators
High precision current transformer cores
Ground fault circuit breaker (relay parts)

Standards relative to these applications :
ASTM F30

2. Thermal expansion controlled
-6

8,5 . 10 / °
C
4. Shapes – Tolerances – Destinations
Round bars
Ø 4 to Ø 20mm

Section
Process
Surface Conditions

Ø 20 to Ø 180mm

Ø 100 to Ø 500mm

Cold bars

Hot-rolled bars
Peeled, rectified, polished,
roller burnished, raw
3m to 6m

Forged bars
Peeled, ground, rectified,
polished, raw
500 mm to 6m

Raw, rectified, chamfrened

Length

3 to 6m

Weight

min 400Kg
Wooden box or narrow
strapping
drawn straightened and
rectified
h9, Ra < 1,2µm

Ground

min 1000Kg
Wooden box or narrow
strapping
Peeled + roller burnished
h11 or h12 Ø >100 mm, Ra
< 3,2µm
+/- 3mm

Peeled (Ra < 6,3µm)

-0/+ 0,8mm for diameter < 80mm
-0/+1,2mm for diameter > 81mm

- 0 / +3mm

< 2mm/m

< 4,2mm/m

Packaging
Tolerances

Straightness
Uses
Customer processes
used in manufacturing
finished parts

< 1mm/m

Secured package

+/- 3mm

Bars for machining

Bars for machining or hot-transformation

Machining, free-cutting

Machining, forging, stamping, hot-rolling, drop forging,
ring beking, drawing, upsetting, ring rolling,…

Aperam Alloys Imphy
Innovatis
5, rue Luigi Cherubini
F- 93212 St Denis

Tel + 33 1 71 92 00
Fax + 33 1 92 07 93
nickel.alloys@aperam.com
www.aperam.com/alloys-imphy

© March 2012

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