Eberle Fuehlerlehrenstahl
Eberle Fuehlerlehrenstahl Produkte

Benefits at a glance:

  • best thickness and width tolerances
  • optically identical surfaces for all thicknesses
  • optimum edge geometry
  • well-stocked warehouses throughout the world, flexible delivery of small quantities

Feeler Gauge Steel

Absolute precision, a full range of different thicknesses and a consistently uniform surface finish – exactly what manufacturers of feeler gauges in the tools and testing equipment industries expect from their precision strip steel. We also supply feeler gauge steel for gauge strips, measuring tapes and measuring foils and shims in all thicknesses required. Optimum edge geometry and the flexibility to draw from stocks around the world including small quantities – all this makes us the supplier of choice. Speak to us if you would like to know more.

Parameters Recommendation
Thickness tolerance T2 – T4
Tensile strength range M
Flatness class 2
Surface white polished
Edges t < 0,10 mm [.0039 in]: deburred
t ≥ 0,10 mm [.0039 in]: rounded
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

Available in white, blue and yellow

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 (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 1,5 µm per 1 mm 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 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 1.274 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 in 0,65 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 in

t ≥ 0,30 mm
10,00 ≤ w ≤ 150,00 mm
Tip: s
Bevel angle: x
K3 Rectangular rounded
t ≥ .006 in
.236 ≤ w ≤ 5.906 in

t ≥ 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 0,25 ≤ t < 0,80 mm : 0,08 mm 0,80 ≤ t < 1,27 mm : 0,15 mm 1,27 ≤ t ≤ 1,75 mm : 0,20 mm
K4 Rounded
t ≥ .0024 in
.157 ≤ w ≤ 5.906 in

t ≥ 0,06 mm
4,00 ≤ w ≤ 150,00 mm