Benefits at a glance:
- highest fatigue resistance
- excellent surface finish
- best purity grade
- consistent, uniform microstructure
- excellent stamping and punching properties, process reliability
Flapper Valve Steel
Stamping/punching shops and compressor manufacturers rely on valve flap steel for compressors that is fatigue-resistant and which can be easily processed. The quality of cooling units and air conditioners is based to a large extent on the quality and robustness of the valve flaps in the compressors. They are crucial for the power fluctuations in the operation of the compressors, for instance. This is another area where our technical expertise in flapper valve steel and the fast availability of our flapper valve steels give us a competitive advantage. If you would like to see for yourself how good the quality of our strip steel is then give us a call!
Parameters | Recommendation |
---|---|
Thickness tolerance | T3 – T4 |
Roughness | class 3 |
Tensile strength | range M |
Flatness | class 3 |
Surface | white polished |
Edges | slit / deburred |
Grade | Eberle 18 |
Thickness t (in) | Tolerances ± in | ||||
T1 | T2 | T3 | T4 | T5 | |
.0008 ≤ t < .0016 | .00016 | .00012 | .00008 | .00006 | – |
.0016 ≤ t < .0025 | .00020 | .00016 | .00012 | .00008 | – |
.0025 ≤ t < .0039 | .00024 | .00020 | .00016 | .00012 | .00008 |
.0039 ≤ t < .0049 | .00028 | .00020 | .00016 | .00012 | .00008 |
.0049 ≤ t < .0063 | .00035 | .00024 | .00020 | .00016 | .00012 |
.0063 ≤ t < .0079 | .00039 | .00028 | .00020 | .00016 | .00012 |
.0079 ≤ t < .0098 | .00043 | .00031 | .00024 | .00016 | .00012 |
.0098 ≤ t < .0124 | .00051 | .00035 | .00028 | .00020 | .00016 |
.0124 ≤ t < .0157 | .00059 | .00043 | .00031 | .00024 | .00016 |
.0157 ≤ t < .0197 | .00067 | .00047 | .00035 | .00024 | .00016 |
.0197 ≤ t < .0248 | .00079 | .00055 | .00039 | .00028 | .00020 |
.0248 ≤ t < .0315 | .00091 | .00067 | .00047 | .00031 | .00024 |
.0315 ≤ t < .0394 | .00106 | .00075 | .00051 | .00035 | .00028 |
.0394 ≤ t < .0492 | .00134 | .00094 | .00067 | .00047 | .00031 |
.0492 ≤ t < .0630 | .00154 | .00110 | .00079 | – | – |
.0630 ≤ t < .0689 | .00181 | .00130 | .00091 | – | – |
Thickness t (mm) | Tolerances ± mm | ||||
T1 | T2 | T3 | T4 | T5 | |
0,020 ≦ t < 0,040 | 0,004 | 0,003 | 0,002 | 0,002 | – |
0,040 ≦ t < 0,063 | 0,005 | 0,004 | 0,003 | 0,002 | – |
0,063 ≦ t < 0,100 | 0,006 | 0,005 | 0,004 | 0,003 | 0,002 |
0,100 ≦ t < 0,125 | 0,007 | 0,005 | 0,004 | 0,003 | 0,002 |
0,125 ≦ t < 0,160 | 0,009 | 0,006 | 0,005 | 0,004 | 0,003 |
0,160 ≦ t < 0,200 | 0,010 | 0,007 | 0,005 | 0,004 | 0,003 |
0,200 ≦ t < 0,250 | 0,011 | 0,008 | 0,006 | 0,004 | 0,003 |
0,250 ≦ t < 0,315 | 0,013 | 0,009 | 0,007 | 0,005 | 0,004 |
0,315 ≦ t < 0,400 | 0,015 | 0,011 | 0,008 | 0,006 | 0,004 |
0,400 ≦ t < 0,500 | 0,017 | 0,012 | 0,009 | 0,006 | 0,004 |
0,500 ≦ t < 0,630 | 0,020 | 0,014 | 0,010 | 0,007 | 0,005 |
0,630 ≦ t < 0,800 | 0,023 | 0,017 | 0,012 | 0,008 | 0,006 |
0,800 ≦ t < 1,000 | 0,027 | 0,019 | 0,013 | 0,009 | 0,007 |
1,000 ≦ t < 1,250 | 0,034 | 0,024 | 0,017 | 0,012 | 0,008 |
1,250 ≦ t < 1,600 | 0,039 | 0,028 | 0,020 | – | – |
1,600 ≦ t ≦ 1,750 | 0,046 | 0,033 | 0,023 | – | – |
Thickness t (in) | Width w (in) | Tolerances ± in | ||
B1 | B2 | B3 | ||
t < .0098 | w < .79 | .003 | .002 | .001 |
.79 ≤ w < 1.97 | .004 | .003 | .002 | |
1.97 ≤ w < 4.92 | .006 | .004 | .003 | |
w ≥ 4.92 | .008 | .006 | .004 | |
.0098 ≤ t < .0197 | w < .79 | .004 | .003 | .002 |
.79 ≤ w < 1.97 | .006 | .004 | .003 | |
1.97 ≤ w < 4.92 | .008 | .006 | .004 | |
w ≥ 4.92 | .010 | .008 | .006 | |
.0197 ≤ t < .0394 | w < .79 | .006 | .004 | .003 |
.79 ≤ w < 1.97 | .008 | .006 | .004 | |
1.97 ≤ w < 4.92 | .010 | .008 | .006 | |
w ≥ 4.92 | .012 | .010 | .006 | |
.0394 ≤ t < .0630 | w < .79 | .008 | .006 | .004 |
.79 ≤ w < 1.97 | .010 | .008 | .006 | |
1.97 ≤ w < 4.92 | .012 | .010 | .006 | |
w ≥ 4.92 | .014 | .010 | .008 | |
.0630 ≤ t ≦ .0689 | w < .79 | .010 | .008 | .006 |
.79 ≤ w < 1.97 | .012 | .008 | .006 | |
1.97 ≤ w < 4.92 | .014 | .012 | .008 | |
w ≥ 4.92 | .016 | .012 | .008 |
Thickness t mm | Width w mm | Tolerances ± mm | ||
B1 | B2 | B3 | ||
t < 0,25 | w < 20,00 | 0,07 | 0,05 | 0,03 |
20,00 ≦ w < 50,00 | 0,10 | 0,07 | 0,05 | |
50,00 ≦ w < 125,00 | 0,15 | 0,11 | 0,07 | |
w ≧ 125,00 | 0,20 | 0,15 | 0,10 | |
0,25 ≦ t < 0,5 | w < 20,00 | 0,10 | 0,07 | 0,05 |
20,00 ≦ w < 50,00 | 0,15 | 0,11 | 0,07 | |
50,00 ≦ w < 125,00 | 0,20 | 0,15 | 0,10 | |
w ≧ 125,00 | 0,25 | 0,20 | 0,15 | |
0,5 ≦ t < 1,0 | w < 20,00 | 0,15 | 0,11 | 0,07 |
20,00 ≦ w < 50,00 | 0,20 | 0,15 | 0,10 | |
50,00 ≦ w < 125,00 | 0,25 | 0,20 | 0,15 | |
w ≧ 125,00 | 0,30 | 0,25 | 0,15 | |
1,0 ≦ t < 1,6 | w < 20,00 | 0,20 | 0,15 | 0,10 |
20,00 ≦ w < 50,00 | 0,25 | 0,20 | 0,15 | |
50,00 ≦ w < 125,00 | 0,30 | 0,25 | 0,15 | |
w ≧ 125,00 | 0,35 | 0,25 | 0,20 | |
1,6 ≦ t ≦ 1,75 | w < 20,00 | 0,25 | 0,20 | 0,15 |
20,00 ≦ w < 50,00 | 0,30 | 0,20 | 0,15 | |
50,00 ≦ w < 125,00 | 0,35 | 0,30 | 0,20 | |
w ≧ 125,00 | 0,40 | 0,30 | 0,20 |
Surface Roughness
Thickness t (in) | Roughness (nach DIN EN ISO 4287 : 1998) | ||
Class 1 | Class 2 | Class 3 | |
t ≤ .0197 | Ra ≦ 11.8 µin Rt ≦ 118 µin |
Ra ≦ 9.8 µin Rt ≦ 98 µin |
Ra ≦ 5.1 µin Rt ≦ 59 µin |
.0197 < t ≤ .0276 | Ra ≦ 7.9 µin Rt ≦ 79 µin |
||
.0276 < t ≤ .0394 | Ra ≦ 13.8 µin Rt ≦ 138 µin |
||
.0394 < t ≤ .0689 | Ra ≦ 15.7 µin Rt ≦ 157 µin |
Ra ≦ 13.8 µin Rt ≦ 138 µin |
Ra ≦ 11.8 µin Rt ≦ 118 µin |
Available in white, blue and yellow
Surface Roughness
Thickness t mm | Roughness (nach DIN EN ISO 4287 : 1998) | ||
Class 1 | Class 2 | Class 3 | |
t ≦ 0,500 | Ra ≦ 0,30 µm Rt ≦ 3,00 µm |
Ra ≦ 0,25 µm Rt ≦ 2,50 µm |
Ra ≦ 0,13 µm Rt ≦ 1,50 µm |
0,500 < t ≦ 0,700 | Ra ≦ 0,20 µm Rt ≦ 2,00 µm |
||
0,700 < t ≦ 1,000 | Ra ≦ 0,35 µm Rt ≦ 3,50 µm |
||
1,000 < t ≦ 1,750 | Ra ≦ 0,40 µm Rt ≦ 4,00 µm |
Ra ≦ 0,30 µm Rt ≦ 3,00 µm |
Ra ≦ 0,30 µm Rt ≦ 3,00 µm |
Thickness t (in) | Tensile Strength MPa | Eberle Tolerance +/- | ||
---|---|---|---|---|
Range L | Range M | Range H | ||
.0008 ≤ t < .0039 | – | HV630 | – | HV25 |
.0039 ≤ t < .0049 | 1800 | 2100 | 2300 | 50 |
.0049 ≤ t < .0069 | 1800 | 2050 | 2250 | 50 |
.0069 ≤ t < .0089 | 1750 | 2000 | 2200 | 50 |
.0089 ≤ t < .0108 | 1750 | 1950 | 2200 | 50 |
.0108 ≤ t < .0148 | 1700 | 1900 | 2150 | 50 |
.0148 ≤ t < .0167 | 1650 | 1850 | 2100 | 50 |
.0167 ≤ t < .0187 | 1600 | 1800 | 2050 | 50 |
.0187 ≤ t < .0207 | 1550 | 1750 | 2000 | 50 |
.0207 ≤ t < .0246 | 1550 | 1750 | 2000 | 50 |
.0246 ≤ t < .0285 | 1500 | 1700 | 1950 | 50 |
.0285 ≤ t < .0325 | 1500 | 1700 | 1950 | 50 |
.0325 ≤ t < .0364 | 1450 | 1650 | 1900 | 50 |
.0364 ≤ t < .0404 | 1450 | 1650 | 1900 | 50 |
.0404 ≤ t < .0453 | 1450 | 1650 | 1900 | 50 |
.0453 ≤ t < .0492 | 1400 | 1600 | 1850 | 50 |
.0492 ≤ t < .0531 | 1400 | 1600 | 1850 | 50 |
.0531 ≤ t < .0620 | 1400 | 1600 | 1850 | 50 |
.0620 ≤ t ≤ .0689 | 1350 | 1550 | 1800 | 50 |
Thickness t (mm) | Tensile Strenght MPa | Eberle Tolerance +/- | ||
---|---|---|---|---|
Range L | Range M | Range H | ||
0,020 ≤ t < 0,100 | – | HV630 | – | HV25 |
0,100 ≤ t < 0,125 | 1800 | 2100 | 2300 | 50 |
0,125 ≤ t < 0,175 | 1800 | 2050 | 2250 | 50 |
0,175 ≤ t < 0,225 | 1750 | 2000 | 2200 | 50 |
0,225 ≤ t < 0,275 | 1750 | 1950 | 2200 | 50 |
0,275 ≤ t < 0,375 | 1700 | 1900 | 2150 | 50 |
0,375 ≤ t < 0,425 | 1650 | 1850 | 2100 | 50 |
0,425 ≤ t < 0,475 | 1600 | 1800 | 2050 | 50 |
0,475 ≤ t < 0,525 | 1550 | 1750 | 2000 | 50 |
0,525 ≤ t < 0,625 | 1550 | 1750 | 2000 | 50 |
0,625 ≤ t < 0,725 | 1500 | 1700 | 1950 | 50 |
0,725 ≤ t < 0,825 | 1500 | 1700 | 1950 | 50 |
0,825 ≤ t < 0,925 | 1450 | 1650 | 1900 | 50 |
0,925 ≤ t < 1,025 | 1450 | 1650 | 1900 | 50 |
1,025 ≤ t < 1,150 | 1450 | 1650 | 1900 | 50 |
1,150 ≤ t < 1,250 | 1400 | 1600 | 1850 | 50 |
1,250 ≤ t < 1,350 | 1400 | 1600 | 1850 | 50 |
1,350 ≤ t < 1,575 | 1400 | 1600 | 1850 | 50 |
1,575 ≤ t ≤ 1,750 | 1350 | 1550 | 1800 | 50 |
Thickness t in | Flatness deviation P | |||
Class 1 | Class 2 | Class 3 | Class 4 | |
.0008 ≦ t < .0039 | P60 | P50 | P40 | P30 |
.0039 ≦ t < .0079 | P50 | P40 | P30 | P20 |
.0079 ≦ t < .0138 | P45 | P35 | P25 | P15 |
.0138 ≦ t < .0197 | P40 | P30 | P20 | P10 |
.0197 ≦ t ≦ .0689 | P35 | P25 | P15 | P10 |
P15 means maximum flatness deviation of .0015 in per 1 in strip width.
Thickness t mm | Flatness deviation P | |||
Class 1 | Class 2 | Class 3 | Class 4 | |
0,020 ≦ t < 0,100 | P60 | P50 | P40 | P30 |
0,100 ≦ t < 0,200 | P50 | P40 | P30 | P20 |
0,200 ≦ t < 0,350 | P45 | P35 | P25 | P15 |
0,350 ≦ t < 0,500 | P40 | P30 | P20 | P10 |
0,500 ≦ t ≦1,750 | P35 | P25 | P15 | P10 |
P15 means maximum flatness deviation of .0015 in per 1 in strip width.
Strip width w (in) | Measured lenght (ft) | Class 3 (in) | Class 4 (in) | Class 5 (in) |
w < .591 | 1.6 | .063 | .031 | .024 |
.591 ≤ w < 1.378 | 3.3 | .071 | .035 | .024 |
10 | .142 | .071 | .047 | |
1.378 ≤ w < 4.921 | 3.3 | .047 | .024 | .012 |
10 | .094 | .047 | .024 | |
4.921 ≤ w ≤ 9.843 | 3.3 | .047 | – | – |
G0,6/3 means maximum straightness deviation of .024 in over a measuring length of 10 ft.
Strip width w (mm) | Measured lenght (m) | Class 3 (mm) | Class 4 (mm) | Class 5 (mm) |
w < 15,00 | 0,5 | 1,6 | 0,8 | 0,6 |
15,00 ≤ w < 35,00 | 1 | 1,8 | 0,9 | 0,6 |
3 | 3,6 | 1,8 | 1,2 | |
35,00 ≤ w < 125,00 | 1 | 1,2 | 0,6 | 0,3 |
3 | 2,4 | 1,2 | 0,6 | |
125,00 ≤ w ≤ 250,00 | 1 | 1,2 | – | – |
G0,6/3 means maximum straightness deviation of 0,6 mm in over a measuring length of 3 m.
Grade | Chemical Composition (percent nominal) | Comparison of Norms | |||||
---|---|---|---|---|---|---|---|
C | Si | Mn | Cr | DIN | Material | AISI | |
Eberle 18 | 1,00 | 0,25 | 0,40 | – | C100S | 1.1274 | 1095 |
KG, KE | Slit .079 ≤ w ≤ 9.843 in 2,00 ≤ w ≤ 250,00 mm Deburred t < .026 in: .157 ≤ w ≤ 9.843 in t ≥ .026 in: .157 ≤ w ≤ 5.906 in0,65 mm: 4,00 ≤ w ≤ 250,00 mm t ≥ 0,65 mm: 4,00 ≤ w ≤ 150,00 mm |
|
K2 | Bevelled t ≥ .012 in .394 ≤ w ≤ 5.906 int ≥ 0,30 mm 10,00 ≤ w ≤ 150,00 mm Tip: s Bevel angle: x |
|
K3 | Rectangular rounded t ≥ .006 in .236 ≤ w ≤ 5.906 int ≥ 0,15 mm 6,00 ≤ w ≤ 150,00 mm Standard radiuses r .006 ≤ t < .010 in : .0016 in .010≤ t < .031 in : .0031 in .031 ≤ t < .050 in : .0059 in .050 ≤ t ≤ .069 in : .0078 in 0,15 ≤ t < 0,25 mm : 0,04 mm |
|
K4 | Rounded t ≥ .0024 in .157 ≤ w ≤ 5.906 int ≥ 0,06 mm 4,00 ≤ w ≤ 150,00 mm |