ETG ® and HSX ®

Modern High Strength Steels

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Steeltec - Production plants

Swiss Steel AG- 600`000 p.a.- Special quality steel- Free cutting steel

Steeltec AG- 90`000 p.a.- Bright bars

Schmolz+Bickenbach AGSwiss Operations

MARKETS BY SEGMENT 4

Turning Shops

AutomotiveMachinery /Hydraulics

Automotive trends as a result of legal requirements

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ICEoptimization

Powertrainoptimization

Active andpassive

safety features

Reduction ofvehicle weight

Special steel solutions are required for each single application � modular materials!

ETG® - Static properties

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6 8 10 12800

1000

1100

1300

Ultimate elongation [%]

Ten

sile

str

eng

th [

N/m

m2 ]

14 16

1200

900

1400

ETG® 100

ETG® 88

200 µm

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ETG® - Static properties

6 8 10 12800

1000

1100

1300

Ultimate elongation [%]

Ten

sile

str

eng

th [

N/m

m2 ]

14 16

1200

900

1400

ETG® 100

ETG® 88

200 µm

STEELTEC 2009

ETG® components in automotive applications

shafts inelectrical drives

safety parts

hydraulicsystems

gearbox

common railsystem

ETG® - Component cost

9

material cost

cutting speed

com

po

nen

tco

st

ETG® - Induction hardening (HF)

� treatment temperature 840°C � 870°C

� quenching media: oil, polymer

� tempering at 200°C for 1h

� hardening depth < 1 mm recommended

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Carbon content

%

Hardness

HRC

ETG® - Nitrocarburizing

Hardness pattern Microstructure

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ETG® 100Nitrated at 520°C with KN=2Nitrocarburized at 570°C with KN=2 + 2.5% CO2

distance from surface, mm

Vic

kers

har

dnes

s, H

V 0

.5

HSX®

High strength special steel forhighly loaded application

HSX® - Application areas

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6 8 10 12800

1000

1100

1300

14 16

1200

900

1400

ETG® 100

HSX® 130

ETG® 88

Parts, with a transmissionof high static forces:� Gear shafts� Camshafts� Drill shafts� Hydraulic /

pneumatic cylinders� Thrust bars

HSX® 110

HSX® Z12

Hydraulich tools, withtransmission of high forcesand in addition impact loads

Boltings with defined torque

Parts with high compressivestress

Ten

sile

str

eng

th [

N/m

m2 ]

Ultimate elongation [%]

HSX ® 90

HSX® - Microstructure

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HSX® 90 HSX® 110 HSX® Z12 HSX® 130

BainiteRp0.2 > 650 MPa

S = 0.01%

Ferrite / PearliteRp0.2 > 950 MPa

S = 0.035%

BainiteRp0.2 > 800 MPa

S = 0.15%

BainiteRp0.2 > 1200 MPa

S = 0.15%

HSX® - less component cost

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Heat treated and nitrited steel

HSX®

HSX®heat treated andnitrited steel

Ind

ex c

om

po

nen

tco

st

0

2

4

6

8

10

material

material

roughing annealing finishing

roughingfinishing

drilling

drilling

heattreatment

grinding

Yourbenefit!

Strong steel solutions to enhance your competitiveness!

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HSX® - Improved performance with same diameter

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C45E 42CrMoS4

strength class

HSX® 130

no

min

al to

rqu

e, k

Nm

6

3

5

4 78 %78 % 78 %78 %

18 %

shaft diameter: 50 mm

load

nominal torque see diagram

load dyn. fatigue stress

Nominal bending moment 500 Nm

load dyn. alternating load

Mode of operation:uniform, revolving motion

Rp0.2, MPa Rm, MPa

C45E 370 630

42CrMoS4 650 900

HSX® 130 1�300 1�350

HSX® - Lightweight design by reducing the diameter

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C45E 42CrMoS4

strength class

HSX® 130

wei

gh

t, %

100

0

50

Steel bar round 16 � 50 mm

Rp0.2, MPa Rm, MPa

C45E 430 650

42CrMoS4 750 1000

HSX® 130 1�300 1�350

axial load

shaft diameter: 50 mm

HSX® - Subsequent processes

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cold forming welding machining heat treating

HSX® 90

ETG® 88

ETG® 100

HSX® 110

material

process

ETG® 25

less suitable suitable well suitable

System: div. adjustmentsComponent: threated spindle

Automotiv Industrie

worm shaft

seat adjustmentseat up adjustment

Application example � worm gear shaft (d < 15 mm)

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Comparison of chemical composition

element ETG®25 HSX®90 ETG®88 ETG®88 C+

C, % 0.24 - 0.29 < 0.12 0.42 - 0.48 0.47 - 0.51

Si, % 0.10 - 0.30 < 0.60 0.10 - 0.30 0.10 - 0.30

Mn, % 1.20 - 1.50 < 2.00 1.35 - 1.65 1.35 - 1.65

P, % < 0.04 < 0.025 < 0.04 < 0.04

S, % 0.02 - 0.04 < 0.015 0.24 - 0.33 0.24 - 0.33

Mo, % < 0.04 < 0.50 < 0.04 < 0.04

Ti, % 0.02 - 0.04 < 0.22 --- ---

V, % --- < 0.20 --- ---

Application example � worm gear shaft (d < 15 mm)

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ETG®25 HSX®90 ETG®88 ETG®88 C+

Rp0.2, N/mm2 > 660 > 850 > 685 > 820

Rm, N/mm2 800 - 900 > 880 800 - 950 960 - 1150

A5, % > 12.0 > 12.0 > 7.0 > 7.0

microstructure ferrite/pearlite bainite ferrite/pearlite ferrite/pearlite

machining

welding

cold forming

criteria:

Comparison of mechancal-technological characteristics:

less suitable well suitable

Thank you very much

for your attention!

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