GALILEO - High Chromium Steel

GALILEO - High Chromium Steel
SPECIFICITY
X 100
This grade is characterized by a
martensitic matrix with a carbide
content of 10 / 12 %. The main
carbides are of the M7C3 and M2C type.
The main properties of this grade are:
- excellent mechanical properties,
- a high temperature strength,
- a high resistance to fire cracking,
- a high resistance to oxidation /
corrosion,
- a high wear resistance,
- a perfect surface aspect after long
runs.
All these properties make it very
suitable for plate mill rolling and some
roughing mill applications.
X 500
MECHANICAL PROPERTIES
1MPa = 1 N / mm2 (= 0.1 kgf / mm2)
• Tensile strength Rt
• Young modulus E
• Compressive yield strength Rc 0,25%
• Compressive strength Rc
• Bending strength
• Ductility (compression)
700 / 800
200000 / 210000
1800 / 2000
2600 / 3200
1200 / 1400
10 / 15
MPa
MPa
MPa
MPa
MPa
%
12.0 / 12.4
16 / 18
480 / 500
10-6 1/°C
W/m.K
J/Kg.K
PHYSICAL PROPERTIES
• Thermal expansion (25-400°C) α
• Thermal conductivity (25-100°C) λ
• Specific heat (25-100°C)
Cp
HARDNESS
• Shore
• Vickers
• Equotip
ShC
HV
LE
HARDNESS IN DEPTH
Hardness (ShC)
85
80
75
70
65
60
55
50
45
40
35
Wear resistance
Sticking - roll oxidation
Fire cracks
Slippage
««« very good
Bonding
zone
«« good
[%-wt]
C (Carbon)
Si (Silicon)
Mn (Manganese)
Ni (Nickel)
Cr (Chromium)
Mo (Molybdenum)
P (Phosphorus)
S (Sulphur)
1.5 / 2.5
0.4 / 1.0
0.4 / 1.0
0.5 / 1.5
8.0 / 15.0
2.0 / 5.0
< 0.05
< 0.04
V (Vanadium)
others
0.1 / 1.0
0.5 / 5.0
APPLICATIONS
CHARACTERISTICS
65 / 85
500 / 730
690 / 790
CHEMICAL ANALYSIS
«««
««
«««
«
• Work rolls for continuous and
reversing roughing stands of Hot
Strip Mills
• Work rolls for Plate Mills
« weak
CORE MATERIAL COMBINATION
• Ferritic nodular graphite iron
SHELL
MARICHAL KETIN
CORE
5 10 15 20 25 30 35 40 45 50
Depth
(mm)
S.A. DES FONDERIES
J. MARICHAL KETIN & CIE
Rue Ernest Solvay 372
B-4000 Liège (Sclessin)
Belgium
Tel.: + 32 / 4 / 234 72 06
Fax: + 32 / 4 / 234 72 51
E-Mail: [email protected]
Internet: www.mkb.be