MarsMetal
SPECIALITY CASTING DIVISION

Lead Sheet Thickness & Size Chart

All Available Sizes:

Lbs./SF Actual Thickness Maximum Size   Lbs./SF Actual Thickness Maximum Size
Common, Chemical or Antimonial Lead (inches) (feet)   Common, Chemical or Antimonial Lead (inches) (feet)
  Decimal Fraction Width Length     Decimal Fraction Width length
1.0 0.016 1/64 4 25            
 2.0 0.033 1/32 8 25   22.5 0.375 8/8 8  
 2.5 0.041 1/24 8 25            
 3.0 0.05 - 8 25            
 3.5 0.058 - 8 25   24 0.4 2/5 8 20
3.75 0.063 1/16 8 25             
 4.0 0.066 - 8 25            
 5.0 0.082 1/12 8 25   30 0.5 1/2 0.8 20
 6.0 0.1 1/10 8 25            
 6.5 0.105 - 8 25            
 7.0 0.117 - 8 25   40 0.667 2/3 8 20
 7.5 0.125 1/8 8 25            
 8.0 0.133 - 8 25            
10 0.167 1/6 8 20   45 0.75 3/4 8 20
11.25 0.187 3/16 8 20            
12 0.2 1/5 8 20            
15 0.25 1/4 8 20            
16 0.267 - 8 20   60 1 1    8 20
20 0.333 1/3 8 20            

Stock Sheet Lead Sizes:  2, 4, & 8 LB. are sold in Rolls, 16 LB. in full sheets. Stock Sheet Sizes are 48" wide x 120" long (40 Square feet per sheet) and 48" wide x 96" long (32 Square feet per sheet). Custom cut sizes may be available, call us for more information.

Note: MarShield™ Sheet Lead is true weight and thickness.

Recommended Lead Sheet Thickness' for Gamma Shielding:

Energy (mev)
Activity 0.2 0.5 0.8 1 1.5 2 2.5 3 4
10 mc -0.14 -0.36 -0.27 -0.11 0.37 0.78 1.15 1.4 1.7
20 mc -0.09 0 0.41 0.076 1.57 2.16 2.63 2.91 3.21
50 mc -0.01 0.47 1.13 1.9 3.15 4 4.57 4.9 5.2
100 mc 0.06 0.82 1.99 2.77 4.34 5.38 6.05 6.41 6.71
200 mc 0.1 1.17 2.67 3.63 5.54 6.77 7.52 7.92 8.21
500 mc 0.17 1.94 3.57 4.78 7.12 8.6 9.47 9.91 10.21
1 c 0.23 1.99 4.25 5.56 8.31 9.99 10.95 11.41 11.74
2 c 0.28 2.35 4.93 6.52 9.51 11.37 12.42 12.92 13.72
5 c 0.36 2.81 5.82 7.85 11.09 13.21 14.37 14.91 15.21
10 c 0.41 3.17 6.5 8.52 12.28 14.58 15.85 16.42 16.72
20 c 0.47 3.52 7.18 9.39 13.48 15.98 17.23 17.93 18.23
50 c 0.54 3.99 8.08 10.54 16.06 17.81 19.27 19.92 20.22
100 c 0.6 4.34 8.78 11.4 16.25 19.2 20.75 21.43 21.72

Danger Range Plus Plus Plus Plus Plus Plus Plus Plus Plus
20 cm 0.26 1.64 3.15 4.02 5.55 6.44 6.85 7.0 7.0
50 cm 0.11 0.71 1.36 1.73 2.39 2.77 2.95 3.01 3.01
1 m 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
2 m -0.11 -0.71 -1.36 -1.72 -2.39 -2.77 -2.95 -3.01 -3.01
5 m -0.26 -1.64 -3.15 -4.02 -5.55 -6.44 -6.85 -7.0 -7.0
10 m -0.037 -2.35 -4.52 -5.76 -7.94 -9.21 -9.8 -10.01 -10.01

Working time hr/day Plus Plus Plus Plus Plus Plus Plus Plus
1 -0.17 -1.06 -2.04 -2.6 -3.59 -4.16 -4.42 -4.52
2 -0.11 -0.71 -1.36 -1.73 -2.39 -2.77 -2.95 -3.01
4 -0.06 -0.35 -0.65 -0.87 -1.2 -1.39 -1.47 -1.51
8 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
24 0.09 0.56 1.06 1.37 1.89 2.2 2.34 2.39


Recommended Lead Sheet Thickness' for X-Ray Rooms:

X-Rays Generated by Peak Voltages Not Exceeding Minimum Thickness of Lead Weight per Square Foot in Pounds
Millimetre Inches
75 kv 1.0 0.039 2 1/2
100 kv 1.5 0.059 4
125 kv 2.0 0.079 5
150 kv 2.5 0.093 7
175 kv 3.0 0.118 8
200 kv 4.0 0.157 10
225 kv 2.0 0.197 13
300 kv 9.0 0.354 24
400 kv 15.0 0.591 38
600 kv 34.0 1.343 81
900 kv 51.0 2.0 120