Bars - Superimphy® 90 - N070900 pages

Bar
Corrosion application

SY 90
SY 90 is an aged hardening nickel-chromium-cobalt alloy. It combines a high tensile strength up to 600° with good creepC
rupture properties up to 920° It has a good corro sion resistance in wide oxidizing environment. It presents also a good
C.
resistance to cyclic heating.
1. Chemical content

Ni

UNS N07090
2. Heat treatments

Co

Fe

Ti

Al

Base

Wr 2.4632

Cr
18-21

16-21

<2

2-3

1-2

3. Applications

Our standard is : Solution : 1080° 2 to 4 hrs, ai r
C,
cooling + Aged hardening 700° - 16hrs, air cooling
C
Other treatments are possible. Please consult us.

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Elements for gas turbines (discs, blades, …)
Forgings
Ring sections
Hot working tools

4. Shapes – Tolerances – Destinations
Round bars
Section

Ø 4 to Ø 20mm
Process

Surface Conditions

Cold bars
Raw, rectified, chamfrened

Length

3 to 6m

Weight

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

Packaging
Tolerances

Ø 100 to Ø 300mm

Hot-rolled bars
Forged bars
Peeled, rectified, polished,
Peeled, ground, rectified,
roller burnished, raw
polished, raw
3 to 6m
min 1000Kg
Wooden box or narrow
Secured package
strapping
Peeled + roller burnished
h11, Ra < 3,2µm
+/- 3mm

Peeled (Ra < 6,3µm)

< 1mm/m

+/- 3mm

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

Ground

Straightness

Ø 20 to Ø 140mm

- 0 / +3mm

< 4,2mm/m

< 4,2mm/m

Uses

Bars for machining

Bars for machining or hot-transformation

Customer processes used
in manufacturing finished
parts

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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