SUMIKASUPER LCP physical properties table

Representative physical property data for SUMIKASUPER LCP

The table below shows typical physical property data for each grade of SUMIKASUPER LCP. All data are typical values and are not guaranteed values for the product.

Table 2-1 Representative physical property data for SUMIKASUPER E5000 and E4000 series

  E5000 Series
General Physical Properties Test method unit E5006L E5008 E5008L E52008 E5204L
Color     Natural/
Black		 Natural/
Black		 Natural/
Black		 Natural/
Black		 Black
Filler     Glass fiber Glass fiber Glass fiber Glass fiber Glass fiber/
Inorganic
Total amount of filler   wt% 30 40 40 40 20
Physical properties              
Density ISO 1183 g/cm3 1.60 1.69 1.69 1.69 1.21
Specific gravity ASTM D792 - 1.60 1.69 1.69 1.69 1.21
Water absorption rate 23℃,
Underwater 24 hours		 ISO 62 ％ 0.02 0.02 0.02 0.02 0.02
Mold shrinkage MD Sumitomo Chemical Method*1 ％ 0.02 0.06 0.05 0.08 0.57
TD ％ 0.86 1.25 0.81 1.23 1.70
Mechanical properties              
Tensile strength ISO 527-1,2 MPa 116 101 108 97 67
ASTM D638 MPa 151 111 123 112 89
Tensile elongation ISO 527-1,2 ％ 1.6 2.5 0.9 2.4 1.9
ASTM D638 ％ 4.5 4.8 3.7 5.8 5.5
Tensile Modulus ISO 527-1,2 MPa 16,600 11,900 17,000 - 7,000
Bending strength ISO 178 MPa 179 144 168 117 97
ASTM D790 MPa 152 127 127 124 93
Flexural modulus ISO 178 MPa 15,800 13,300 17,000 11,600 7,600
ASTM D790 MPa 14,200 12,200 13,400 12,000 7,000
Charpy impact strength No notch ISO 179/1eU kJ/m2 39 54 36 27 28
Izod impact strength No notch ISO 180/1U kJ/m2 25 40 24 23 17
ASTM D256 J/m 382 441 324 401 343
Rockwell Strength R scale ASTM D785 - 99 102 100 - 103
Thermal properties              
Deflection Temperature under Load 1.8MPa ISO 75 ℃ 330 330 326 312 313
1.82MPa ASTM D648 ℃ 355 335 339 336 351
Linear expansion coefficient MD
(50-150℃)		 ISO11359-1,2 10-5 /K 1.7 0.1 0.2 - 1.3
TD
(50-150℃)		 10-5 /K 7.3 6.4 6.0 - 7.3
Electrical properties              
Dielectric constant 1MHz IEC 60250 - 3.7 4.2 4.2 - 3.1
1GHz - 3.4 3.7 3.7 - 3.0
Dielectric tangent 1MHz IEC 60250 - 0.022 0.031 0.031 - 0.018
1GHz - 0.005 0.005 0.005 - 0.006
Breakdown Voltage IEC 60243-1 kV/mm - > 40 37 - -
Volume resistivity IEC 60093 Ωm >1013 >1013 >1013 >1013 >1013
Arc Resistance ASTM D495 sec - 128 128 - -
Tracking resistance IEC 60112 V - 175 185 - -
Flame retardance              
Flame Retardant Rank IEC 60695-11-10 class V-0 V-0 V-0 V-0 V-0
UL Yellow Card File No. - - E249884 E249884 E249884 E249884 E249884
  E4000 Series
General Physical Properties Test method unit E4006L E4008 E4009 E4205R
Color     Natural/
Black		 Natural/
Black		 Natural Natural/
Black
Filler     Glass fiber Glass fiber Glass fiber Glass fiber/
Inorganic
Total amount of filler   wt% 30 40 45 25
Physical properties            
Density ISO 1183 g/cm3 1.60 1.70 1.76 1.18
Specific gravity ASTM D792 - 1.60 1.70 1.76 1.18
Water absorption rate 23℃,
Underwater 24 hours		 ISO 62 ％ 0.02 0.02 0.02 0.02
Mold shrinkage MD Sumitomo Chemical Method*1 ％ 0.11 0.10 0.11 0.66
TD ％ 0.78 1.32 1.22 1.67
Mechanical properties            
Tensile strength ISO 527-1,2 MPa 115 103 - 58
ASTM D638 MPa 182 150 152 82
Tensile elongation ISO 527-1,2 ％ 2.3 3.1 - 2.3
ASTM D638 ％ 5.6 5.0 5.4 5.0
Tensile Modulus ISO 527-1,2 MPa 13,700 11,900 - 6,300
Bending strength ISO 178 MPa 196 153 - 90
ASTM D790 MPa 155 139 145 85
Flexural modulus ISO 178 MPa 14,900 12,900 - 6,000
ASTM D790 MPa 11,900 12,300 13,300 5,600
Charpy impact strength No notch ISO 179/1eU kJ/m2 47 54 - 31
Izod impact strength No notch ISO 180/1U kJ/m2 32 43 - 20
ASTM D256 J/m 461 520 374 -
Rockwell Strength R scale ASTM D785 - 104 106 - -
Thermal properties            
Deflection Temperature under Load 1.8MPa ISO 75 ℃ 328 304 - 279
1.82MPa ASTM D648 ℃ 324 326 326 305
Linear expansion coefficient MD
(50-150℃)		 ISO11359-1,2 10-5 /K 0.2 1.4 1.5 -
TD
(50-150℃)		 10-5 /K 8.1 6.2 6.3 -
Electrical properties            
Dielectric constant 1MHz IEC 60250 - 3.8 3.9 - 2.9
1GHz - - 3.7 - 2.8
Dielectric tangent 1MHz IEC 60250 - 0.035 0.034 - 0.013
1GHz - - 0.006 - 0.004
Breakdown Voltage IEC 60243-1 kV/mm 43 43 - -
Volume resistivity IEC 60093 Ωm >1013 >1013 >1013 >1013
Arc Resistance ASTM D495 sec 130 130 - -
Tracking resistance IEC 60112 V 185 175 - -
Flame retardance            
Flame Retardant Rank IEC 60695-11-10 class V-0 V-0 V-0 V-0
UL Yellow Card File No. - - E249884 E249884 E249884 E249884

*1 The molding shrinkage rate was measured using a 64mm x 64mm x 3mm flat test piece.

Table 2-2 Representative physical property data of SUMIKASUPER E6000 series

  E6000 Series
General Physical Properties Test method unit E6006 E6006L E6007AS E6008KE E6008
Color     Black Natural/
Black		 Black Natural/
Black		 Natural/
Black
Filler     Glass fiber Glass fiber Glass fiber/
Inorganic		 Glass fiber Glass fiber
Total amount of filler   wt% 30 30 35 40 40
Physical properties              
Density ISO 1183 g/cm3 1.62 1.61 1.63 1.70 1.70
Specific gravity ASTM D792 - 1.62 1.61 1.63 1.70 1.70
Water absorption rate 23℃,
Underwater 24 hours		 ISO 62 ％ 0.02 0.02 0.02 0.02 0.02
Mold shrinkage MD Sumitomo Chemical Method*1 ％ 0.21 0.19 0.31 0.16 0.18
TD ％ 1.21 0.74 1.08 1.53 1.16
Mechanical properties              
Tensile strength ISO 527-1,2 MPa 142 115 97 100 105
ASTM D638 MPa 166 164 121 146 147
Tensile elongation ISO 527-1,2 ％ 4.1 1.5 2.1 2.0 2.0
ASTM D638 ％ 7.1 5.0 6.8 5.1 5.2
Tensile Modulus ISO 527-1,2 MPa - 11,500 - 12,800 11,800
Bending strength ISO 178 MPa 145 184 131 138 155
ASTM D790 MPa 127 153 126 139 143
Flexural modulus ISO 178 MPa 10,600 13,300 10,200 12,200 13,100
ASTM D790 MPa 9,800 11,300 9,800 11,200 12,300
Charpy impact strength No notch ISO 179/1eU kJ/m2 53 44 29 - 43
Izod impact strength No notch ISO 180/1U kJ/m2 43 32 21 36 32
ASTM D256 J/m 490 363 343 537 412
Rockwell Strength R scale ASTM D785 - - 113 - - 109
Thermal properties              
Deflection Temperature under Load 1.8MPa ISO 75 ℃ 262 288 260 256 275
1.82MPa ASTM D648 ℃ 280 284 274 276 279
Linear expansion coefficient MD
(50-150℃)		 ISO11359-1,2 10-5 /K - 2.0 - 0.3 1.3
TD
(50-150℃)		 10-5 /K - 8.9 - 7.2 5.6
Electrical properties              
Dielectric constant 1MHz IEC 60250 - - 3.7 - - 3.9
1GHz - - 3.5 - - 3.8
Dielectric tangent 1MHz IEC 60250 - - 0.034 - - 0.032
1GHz - - 0.005 - - 0.005
Breakdown Voltage IEC 60243-1 kV/mm - 48 - 36 45
Volume resistivity IEC 60093 Ωm >1013 >1013 104～
1011		 >1013 >1013
Arc Resistance ASTM D495 sec - 130 - - 130
Tracking resistance IEC 60112 V - 175 - - 175
Flame retardance              
Flame Retardant Rank IEC 60695-11-10 class V-0 V-0 V-0 V-0 V-0
UL Yellow Card File No. - - E249884 E249884 E249884 E249884 E249884
  E6000 Series
General Physical Properties Test method unit E6205L E6807T E6809U E6809T
Color     Natural/
Black		 Natural/
Black		 Natural/
Black		 Black
Filler     Glass fiber/
Inorganic		 Inorganic Glass fiber/
Inorganic		 Inorganic
Total amount of filler   wt% 25 35 45 45
Physical properties            
Density ISO 1183 g/cm3 1.20 1.67 1.84 1.85
Specific gravity ASTM D792 - 1.20 1.67 1.84 1.85
Water absorption rate 23℃,
Underwater 24 hours		 ISO 62 ％ 0.02 0.02 0.02 0.02
Mold shrinkage MD Sumitomo Chemical Method*1 ％ 0.68 0.31 0.30 0.20
TD ％ 1.38 1.01 0.80 0.61
Mechanical properties            
Tensile strength ISO 527-1,2 MPa 57 87 92 -
ASTM D638 MPa 74 106 90 94
Tensile elongation ISO 527-1,2 ％ 2.9 6.0 2.9 -
ASTM D638 ％ 5.7 9.8 5.0 5.7
Tensile Modulus ISO 527-1,2 MPa 4,800 6,500 - -
Bending strength ISO 178 MPa 89 106 - -
ASTM D790 MPa 88 97 105 107
Flexural modulus ISO 178 MPa 5,100 7,600 - -
ASTM D790 MPa 5,300 7,300 9,500 9,600
Charpy impact strength No notch ISO 179/1eU kJ/m2 22 55 36 -
Izod impact strength No notch ISO 180/1U kJ/m2 18 48 32 -
ASTM D256 J/m 280 515 350 410
Rockwell Strength R scale ASTM D785 - 108 103 - -
Thermal properties            
Deflection Temperature under Load 1.8MPa ISO 75 ℃ 236 240 253 -
1.82MPa ASTM D648 ℃ 258 262 270 262
Linear expansion coefficient MD
(50-150℃)		 ISO11359-1,2 10-5 /K - - 1.0 -
TD
(50-150℃)		 10-5 /K - - 6.0 -
Electrical properties            
Dielectric constant 1MHz IEC 60250 - 3.0 - - -
1GHz - 2.9 3.4 - -
Dielectric tangent 1MHz IEC 60250 - 0.032 - - -
1GHz - 0.005 0.005 - -
Breakdown Voltage IEC 60243-1 kV/mm - 50 - -
Volume resistivity IEC 60093 Ωm >1013 >1013 >1013 >1013
Arc Resistance ASTM D495 sec - 133 - -
Tracking resistance IEC 60112 V - 175 - -
Flame retardance            
Flame Retardant Rank IEC 60695-11-10 class V-0 V-0 V-0 V-0
UL Yellow Card File No. - - E249884 E249884 E249884 E249884

*1 The molding shrinkage rate was measured using a 64mm x 64mm x 3mm flat test piece.

Table 2-3 Representative physical property data for SUMIKASUPER E6000HF and SV series

  E6000HF Series
General Physical Properties Test method unit E6007LHF E6807LHF E6808GHF E6808LHF E6808UHF
Color     Natural/
Black		 Natural/
Black		 Natural/
Black		 Natural/
Black		 Natural/
Black
Filler     Glass fiber Glass fiber/
Inorganic		 Glass fiber/
Inorganic		 Glass fiber/
Inorganic		 Glass fiber/
Inorganic
Total amount of filler   wt% 35 35 40 40 40
Physical properties              
Density ISO 1183 g/cm3 1.65 1.67 1.70 1.71 1.72
Specific gravity ASTM D792 - 1.65 1.67 1.70 1.71 1.72
Water absorption rate 23℃,
Underwater 24 hours		 ISO 62 ％ 0.02 0.02 0.02 0.02 0.02
Mold shrinkage MD Sumitomo Chemical Method*1 ％ 0.20 0.20 0.14 0.23 0.22
TD ％ 0.60 0.73 1.11 0.63 1.02
Mechanical properties              
Tensile strength ISO 527-1,2 MPa 120 112 118 110 78
ASTM D638 MPa 157 135 122 127 100
Tensile elongation ISO 527-1,2 ％ 1.3 1.4 1.7 1.2 2.8
ASTM D638 ％ 5.1 5.3 5.4 4.5 5.0
Tensile Modulus ISO 527-1,2 MPa 12,500 11,700 11,700 12,600 7,400
Bending strength ISO 178 MPa 194 178 171 176 110
ASTM D790 MPa 158 145 147 146 120
Flexural modulus ISO 178 MPa 14,600 12,700 12,400 13,800 8,900
ASTM D790 MPa 11,800 12,100 12,300 11,800 9,400
Charpy impact strength No notch ISO 179/1eU kJ/m2 33 35 43 34 45
Izod impact strength No notch ISO 180/1U kJ/m2 24 25 40 22 32
ASTM D256 J/m 251 335 448 302 350
Rockwell Strength R scale ASTM D785 - 110 106 109 110 100
Thermal properties              
Deflection Temperature under Load 1.8MPa ISO 75 ℃ 277 276 261 279 228
1.82MPa ASTM D648 ℃ 269 269 268 274 240
Linear expansion coefficient MD
(50-150℃)		 ISO11359-1,2 10-5 /K 0.2 1.0 0.7 0.4 1.0
TD
(50-150℃)		 10-5 /K 8.5 6.3 7.6 8.1 6.2
Electrical properties              
Dielectric constant 1MHz IEC 60250 - 3.8 3.8 4.0 3.8 3.8
1GHz - 3.8 3.5 3.6 3.6 3.5
Dielectric tangent 1MHz IEC 60250 - 0.026 0.030 0.033 0.038 0.033
1GHz - 0.005 0.004 0.004 0.004 0.004
Breakdown Voltage IEC 60243-1 kV/mm 51 48 36 49 41
Volume resistivity IEC 60093 Ωm >1013 >1013 >1013 >1013 >1013
Arc Resistance ASTM D495 sec 111 133 125 130 155
Tracking resistance IEC 60112 V 175 175 190 175 200
Flame retardance              
Flame Retardant Rank IEC 60695-11-10 class V-0 V-0 V-0 V-0 V-0
UL Yellow Card File No. - - E249884 E249884 E249884 E249884 E249884
  E6000HF Series SV Series
General Physical Properties Test method unit E6810LHF E6810KHF SV6808THF SV6808GHF SV6808L
Color     Natural/
Black		 Natural/
Black		 Natural/
Black		 Natural/
Black		 Natural/
Black
Filler     Glass fiber/
Inorganic		 Glass fiber/
Inorganic		 Glass fiber/
Inorganic		 Glass fiber/
Inorganic		 Glass fiber/
Inorganic
Total amount of filler   wt% 50 50 40 40 40
Physical properties              
Density ISO 1183 g/cm3 1.82 1.82 1.72 1.71 1.70
Specific gravity ASTM D792 - 1.82 1.82 1.72 1.71 1.70
Water absorption rate 23℃,
Underwater 24 hours		 ISO 62 ％ 0.02 0.02 0.02 0.02 0.02
Mold shrinkage MD Sumitomo Chemical Method*1 ％ 0.13 0.39 0.25 0.26 0.20
TD ％ 0.38 0.61 0.56 0.86 0.50
Mechanical properties              
Tensile strength ISO 527-1,2 MPa 95 102 102 97 113
ASTM D638 MPa 105 105 110 107 145
Tensile elongation ISO 527-1,2 ％ 1.1 1.3 1.9 2.9 2.3
ASTM D638 ％ 4.0 3.7 5.5 6.2 3.3
Tensile Modulus ISO 527-1,2 MPa 12,100 11,500 10,400 10,700 10,500
Bending strength ISO 178 MPa 150 154 153 131 189
ASTM D790 MPa 133 130 137 127 150
Flexural modulus ISO 178 MPa 13,700 13,400 10,400 10,100 14,600
ASTM D790 MPa 12,600 12,100 9,000 10,500 11,500
Charpy impact strength No notch ISO 179/1eU kJ/m2 25 22 42 36 36
Izod impact strength No notch ISO 180/1U kJ/m2 16 21 35 28 -
ASTM D256 J/m 200 190 404 401 250
Rockwell Strength R scale ASTM D785 - 102 105 103 105 105
Thermal properties              
Deflection Temperature under Load 1.8MPa ISO 75 ℃ 273 267 262 244 294
1.82MPa ASTM D648 ℃ 266 265 270 255 293
Linear expansion coefficient MD
(50-150℃)		 ISO11359-1,2 10-5 /K 0.5 0.9 0.6 1.3 1.0
TD
(50-150℃)		 10-5 /K 8.0 7.1 5.2 6.8 9.0
Electrical properties              
Dielectric constant 1MHz IEC 60250 - 4.1 - 3.8 3.8 -
1GHz - 3.8 - 3.5 3.5 -
Dielectric tangent 1MHz IEC 60250 - 0.020 - 0.012 0.029 -
1GHz - 0.004 - 0.004 0.004 -
Breakdown Voltage IEC 60243-1 kV/mm 47 47 53 41 -
Volume resistivity IEC 60093 Ωm >1013 >1013 >1013 >1013 >1013
Arc Resistance ASTM D495 sec 171 181 180 132 -
Tracking resistance IEC 60112 V 200 200 175 175 -
Flame retardance              
Flame Retardant Rank IEC 60695-11-10 class V-0 V-0 V-0 V-0 V-0
UL Yellow Card File No. - - E249884 E249884 E249884 E249884 E249884

*1 The molding shrinkage rate was measured using a 64mm x 64mm x 3mm flat test piece.

Table 2-4 Representative physical property data for SUMIKASUPER SR1000, SR2000, and SZ series

  SR1000 Series SR2000 Series
General Physical Properties Test method unit SR1009 SR1009L SR1205L SR2506 SR2507
Color     Natural/
Black		 Natural/
Black		 Natural/
Black		 Natural/
Black		 Natural/
Black
Filler     Glass fiber Glass fiber Glass fiber/
Inorganic		 Glass fiber/
Inorganic		 Inorganic
Total amount of filler   wt% 45 45 25 30 35
Physical properties              
Density ISO 1183 g/cm3 1.74 1.76 1.15 1.62 1.68
Specific gravity ASTM D792 - 1.74 1.76 1.15 1.62 1.68
Water absorption rate 23℃,
Underwater 24 hours		 ISO 62 ％ 0.02 0.02 0.02 0.02 0.02
Mold shrinkage MD Sumitomo Chemical Method*1 ％ 0.30 0.10 0.48 0.21 0.30
TD ％ 0.70 0.45 0.86 0.51 0.50
Mechanical properties              
Tensile strength ISO 527-1,2 MPa 118 142 80 124 115
ASTM D638 MPa 146 179 100 133 128
Tensile elongation ISO 527-1,2 ％ 2.8 1.2 3.6 2.3 2.3
ASTM D638 ％ 4.5 3.5 6.2 7.0 3.8
Tensile Modulus ISO 527-1,2 MPa 11,600 15,800 3,600 12,900 12,800
Bending strength ISO 178 MPa 210 270 125 165 160
ASTM D790 MPa 174 191 115 147 150
Flexural modulus ISO 178 MPa 14,300 16,600 5,700 12,800 13,800
ASTM D790 MPa 12,600 13,100 5,300 11,700 12,800
Charpy impact strength No notch ISO 179/1eU kJ/m2 21 - 14 48 40
Izod impact strength No notch ISO 180/1U kJ/m2 17 17 10 40 40
ASTM D256 J/m 151 121 120 352 252
Rockwell Strength R scale ASTM D785 - 118 116 120 112 103
Thermal properties              
Deflection Temperature under Load 1.8MPa ISO 75 ℃ 267 285 234 231 230
1.82MPa ASTM D648 ℃ 277 286 252 239 240
Linear expansion coefficient MD
(50-150℃)		 ISO11359-1,2 10-5 /K 0.2 0.2 1.1 0.7 0.5
TD
(50-150℃)		 10-5 /K 7.1 7.1 5.6 5.2 2.7
Electrical properties              
Dielectric constant 1MHz IEC 60250 - 4.0 4.2 2.8 3.6 3.7
1GHz - 4.0 3.9 2.8 3.5 3.5
Dielectric tangent 1MHz IEC 60250 - 0.008 0.009 0.007 0.029 0.029
1GHz - 0.003 0.003 0.002 0.004 0.005
Breakdown Voltage IEC 60243-1 kV/mm 27 29 27 53 -
Volume resistivity IEC 60093 Ωm >1013 >1013 >1013 >1013 >1013
Arc Resistance ASTM D495 sec - 121 - 125 -
Tracking resistance IEC 60112 V - 125 - 150 -
Flame retardance              
Flame Retardant Rank IEC 60695-11-10 class V-0 V-0 V-0 V-0 V-0
UL Yellow Card File No. - - E249884 E249884 E249884 E249884 E249884
  SZ Series
General Physical Properties Test method unit SZ4506 SZ6505HF SZ6506HF SZ6709L
Color     Natural/
Black		 Natural/
Black		 Natural/
Black		 Natural
Filler     Inorganic Inorganic Inorganic Glass fiber/
Inorganic
Total amount of filler   wt% 30 25 30 45
Physical properties            
Density ISO 1183 g/cm3 1.63 1.58 1.63 1.89
Specific gravity ASTM D792 - 1.63 1.58 1.63 1.89
Water absorption rate 23℃,
Underwater 24 hours		 ISO 62 ％ 0.02 0.02 0.02 0.02
Mold shrinkage MD Sumitomo Chemical Method*1 ％ 0.21 0.22 0.22 0.17
TD ％ 0.55 0.60 0.47 0.80
Mechanical properties            
Tensile strength ISO 527-1,2 MPa 119 118 116 111
ASTM D638 MPa 143 130 127 115
Tensile elongation ISO 527-1,2 ％ 2.1 1.9 1.9 1.5
ASTM D638 ％ 3.7 7.0 6.1 5.0
Tensile Modulus ISO 527-1,2 MPa - 9,900 10,800 -
Bending strength ISO 178 MPa 148 151 151 155
ASTM D790 MPa 132 140 140 140
Flexural modulus ISO 178 MPa 12,900 11,600 11,600 7,300
ASTM D790 MPa 10,000 11,200 11,900 11,000
Charpy impact strength No notch ISO 179/1eU kJ/m2 49 92 - 33
Izod impact strength No notch ISO 180/1U kJ/m2 43 69 54 -
ASTM D256 J/m 509 430 360 310
Rockwell Strength R scale ASTM D785 - 101 100 101 107
Thermal properties            
Deflection Temperature under Load 1.8MPa ISO 75 ℃ 283 235 238 275
1.82MPa ASTM D648 ℃ 296 244 245 275
Linear expansion coefficient MD
(50-150℃)		 ISO11359-1,2 10-5 /K 0.1 1.1 1.0 0.9
TD
(50-150℃)		 10-5 /K 5.9 7.6 6.6 8.1
Electrical properties            
Dielectric constant 1MHz IEC 60250 - 3.7 3.8 3.5 5.6
1GHz - - 3.4 3.5 5.0
Dielectric tangent 1MHz IEC 60250 - 0.031 0.023 0.011 0.011
1GHz - - 0.004 0.005 0.004
Breakdown Voltage IEC 60243-1 kV/mm 53 50 50 -
Volume resistivity IEC 60093 Ωm >1013 >1013 >1013 >1013
Arc Resistance ASTM D495 sec - 125 125 -
Tracking resistance IEC 60112 V - 200 175 -
Flame retardance            
Flame Retardant Rank IEC 60695-11-10 class V-0 V-0 V-0 V-0
UL Yellow Card File No. - - E249884 E249884 E249884 E249884

*1 The molding shrinkage rate was measured using a 64mm x 64mm x 3mm flat test piece.