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DIN 1695-81 for Wear Resisting Cast Iron
This is a Germany standard for the physical
properties and chemical analysis of
wear resisting cast
iron, or
abrasion
resistant cast iron. The types of wear resisting cast iron
includes antifriction cast iron and anti-wear cast iron. Wear
resisting cast iron has higher hardness and wears resistance.
Moreover, its life time is very long. Wear resisting cast iron are
widely used in the machine bed, engine cylinder liner, pistons,
bearing, etc.
The following is the main content of DIN 1695-81 provided by Dandong
Foundry in China for your reference.
Grade and chemical analysis of check wear resisting
cast iron (mass fraction) (%)
|
Steel
number |
Material
No
W-Hr. |
C |
Si |
Mn |
Cr |
Ni |
Mo |
|
G-X300NiMo3Mg |
0.9610 |
2.8~3.5 |
0.2~0.6 |
0.2~0.5 |
- |
1.5~4.5 |
0.5~0.8 |
|
G-X260NiCr42 |
0.9620 |
2.6~2.9 |
0.2~0.8 |
0.3~0.7 |
1.4~2.4 |
3.3~5.0 |
≤0.5 |
|
G-X330NiCr |
0.9525 |
3.0~3.6 |
0.2~0.8 |
0.3~0.7 |
1.4~2.4 |
3.3~5.0 |
≤0.5 |
|
G-X300CrNi952 |
0.9630 |
2.5~3.5 |
1.5~2.2 |
0.3~0.7 |
8~10 |
4.5~6.5 |
≤0.5 |
|
G-X300CrMo153 |
0.9635 |
2.3~3.6 |
0.2~0.8 |
0.5~1.0 |
14~17 |
≤0.7 |
1.0~3.0 |
|
G-X300CrMoNi1521 |
0.9640 |
2.3~3.6 |
0.2~0.8 |
0.5~1.0 |
14~17 |
0.8~1.2 |
1.8~2.2 |
|
G-X260CrMoNi2021 |
0.9645 |
2.3~2.9 |
0.2~0.8 |
0.5~1.0 |
18~22 |
0.8~1.2 |
1.4~2.0 |
|
G-X260Cr27 |
0.9650 |
2.3~2.9 |
0.5~1.5 |
0.5~1.5 |
24~28 |
≤1.2 |
≤1.0 |
|
G-X300CrMo271 |
0.9655 |
3.0~3.5 |
0.2~1.0 |
0.5~1.0 |
23~28 |
≤1.2 |
1.0~2.0 |
Mechanical properties and characteristics of wear resisting cast
iron
|
Steel
number |
Material
No
W-Nr. |
Tensile
strength
σb≥/Mpa |
Elastic
modulo
E/GPa |
Characteristics |
|
G-X300NiMo3Mg |
0.9610 |
700~1200 |
165~180 |
high
strength cast iron is the material with best impact
property under this standard and among kinds of grade |
|
G-X260NiCr42 |
0.9620 |
320~390 |
169~183 |
high wear
resistant property, used in middle impact load castings |
|
G-X330NiCr42 |
0.9525 |
280~350 |
169~183 |
|
G-X300CrNi952 |
0.9630 |
500~600 |
169 |
good wear
resistant property, used in high impact load castings,
Impact toughness decreases while the carbon content
increases |
|
G-X300CrMo153 |
0.9635 |
450~1000 |
154~190 |
|
G-X300CrMoNi1521 |
0.9640 |
450~1000 |
154~190 |
besides
the above characteristics, it also has good harden
ability |
|
G-X260CrMoNi2021 |
0.9645 |
450~1000 |
154~190 |
|
G-X260Cr27 |
0.9650 |
560~960 |
154~190 |
good wear
resistant property, Impact toughness decreases while
carbon content increases |
|
G-X300CrMo271 |
0.9655 |
450~1000 |
- |
Hardness and microstructure of wear resisting cast iron
|
Grade |
Material
No
W-Nr. |
HV30 |
Microstructure |
|
Hardness
of minimum value after special heat treatment |
Hardness
of minimum value after quenching or quenching and
tempering |
Maximal
hardness value after softening annealing |
|
G-X300NiMo3Mg |
0.9610 |
450 |
520 |
- |
Commonly,
there is no carbide in the structure of Bainite and (or)
martensite, nodular graphite |
|
G-X260NiCr42
G-X330NiCr42 |
0.9620
0.9625 |
450
450 |
520 |
- |
there
distributes cementite on martensite matrix |
|
G-X300CrNi952 |
0.9630 |
450 |
600 |
- |
there
distributes carbonize chrome on martensite matrix,
sometimes exists residual austenitic |
|
G-X300CrMo153
G-X300CrMoNi1521
G-X260CrMoNi2021
G-X260Cr27
G-X300CrMo271 |
0.9635
0.9640
0.9645
0..9650
0.9655 |
450
450
450
450
450 |
600
600
600
550
600 |
400
400
420
420
400
400 |
According
to chemical analysis and heat-treatment, matrix can be
made of pearlite, martensite or austenitic with
carbonize chrome on it |
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