TUNGSTEN PLATE, SHEET, AND FOIL

Tungsten mill products available from H.C. Starck include plate, sheet, and foil with many options on width, length and thickness. Pure Tungsten flat rolled products are fabricated from pressed and sintered powder metallurgy ingot and are rolled to a wide range of plate, sheet, and foil thicknesses.

Flat rolled products

Pure Tungsten flat rolled products are fabricated from pressed and sintered powder metallurgy ingot and are rolled to a wide range of plate, sheet, and foil thicknesses.

The material is 99.95% pure Tungsten sheet and is normally supplied as-rolled in thicknesses below 0.030", and stress relieved at that thickness and above.

Thickness Tolerance

Thickness Tolerance
Width Tolerance
Length Tolerance
Flatness Tolerance
Thickness (Inches)
(% of Thickness)
(Inches)
(Inches)
(% Maximum)
.1875 to .625  
± 4  +.125 -0
 +.125 -0
5
Over .500 to 1.125
± 5
 +.125 -0
 +.125 -0
5

Plate camber (edge straightness) = Maximum .0625 inch per foot of length.

Plate will be sheared, abrasive cut, band saw cut, or water jet cut to the tolerances shown.

Surface Condition

Tungsten plate is normally supplied with a uniform matte finish, clean and free from foreign matter. Major surface defects will be removed by grinding provided that such conditioning does not reduce dimensions below specified limits.

PURE TUNGSTEN SHEET 4202

Physical Characteristics:

Thickness Tolerance
Thickness (Inches)
Up to 12 Inches wide (Inches)
Over 12 thru 24 Inches wide (Inches)
0.005 to 0.008     
± 0.0007

Over 0.008 to 0.011
± 0.001

Over 0.011 to 0.015
± 0.0012

Over 0.015 to 0.020
± 0.0015

Over 0.020 to 0.040
± 0.002

Over 0.040 to 0.187
± 5 %
± 5 %

*For thickness 0.040 to 0.187 inches; sheet will be sheared, abrasive cut, band saw cut, or water jet cut to the tolerances shown.

Bedsheet is sold as a useable width, therefore any cracks or delaminations on the edges are acceptable as long as a 6, 12 or 24 inch minimum width can be yielded from the material.

Length Tolerance

For specified lengths, the tolerance for all sizes is + .0625 - 0 inch per foot of length. Edge Straightness-Maximum camber is .0625 inch per foot of length.

Flatness Tolerance

The total deviation from flatness will not exceed 4 % maximum.

PURE TUNGSTEN FOIL 4201

Physical Characteristics

Thickness Tolerance
Thickness Available
Width (Inches)        
Tolerance (Inches)
0.002
± 0.0003
250 to 6
0.003
± 0.0004
250 to 12
0.004
± 0.0005
250 to 12
0.0049
± 0.0007
250 to 12

Tolerance for intermediate thickness will correspond to next heavier thickness shown.

Width Tolerance
SLIT WIDTH
SHEARED WIDTH
(INCHES) (INCHES)
Thickness (Inches)
over .500 thru 6 wide Inches
over 6 thru 12 wide Inches
over .500 thru 12 wide Inches
0.002 to 0.049
± .010± .015
± .031

Tungsten discs, washers and squares for power semiconductors

Tungsten is widely used as contact materials in silicon controlled rectifiers diodes, transistors and thyristors (GTO’S). Other than in specialist applications, molybdenum is now accepted as the first choice mounting material for power semiconductor devices due to its significantly lower cost and weight.

The fact that both materials have a similar coefficient of expansion to silicon combined with high thermal conductivity makes them an ideal choice, especially in large area power devices where considerable heat is generated. Further applications include the use of molybdenum and tungsten as heat sink bases in IC’S, LSI’S and hybrid circuits.

TUNGSTEN DISCS
PRODUCTION METHOD
THICKNESS
DIAMETER

mm
inch
mm
inch
PUNCH
0.1 - 0.3
0.004 - 0.012
5.0 - 30.0
0.200 - 1.20

0.31 - 0.5
0.012 - 0.020
10.0 - 40.0
0.400 - 1.60

0.51 - 1.0
0.020 - 0.040
10.0 - 50.0
0.400 - 2.00

1.1 - 2.0
0.040 - 0.080
20.0 - 50.0
0.800 - 2.00

2.1 - 3.0
0.080 - 0.160
20.0 - 60.0
0.800 - 2.50


TUNGSTEN SQUARES
PRODUCTION METHOD
THICKNESS
DIAMETER

mm
inch
mm
inch
SAW
0.010 - 0.50    
0.004 - 0.020
0.50 - 10.0
0.020 - 0.40

0.51 - 1.00
0.020 - 0.040
1.00 - 70.0
0.040 - 2.80

1.10 - 2.00
0.040 - 0.080
5.00 - 75.0
0.200 - 3.00
PUNCH
0.20 - 0.50
0.008 - 0.020
5.00 - 25.0
0.200 - 1.00

0.51 - 1.00
0.020 - 0.040
15.0 - 55.0
0.600 - 2.00

1.10 - 2.00
0.040 - 0.080
10.0 - 75.0
0.400 - 3.00
EDM
0.50 - 1.00
0.020 - 0.040
10.0 - 100.0
0.400 - 4.00

1.10 - 2.00
0.040 - 0.080
10.0 - 200.0
0.400 - 0.80

2.10 - 6.00
0.080 - 0.240
20.0 - 200.0
0.800 - 8.00

Length Tolerance

For specific lengths, tolerance is + .0625 - 0 inch per foot of length. Tungsten foil is supplied in a coil having a minimum internal diameter of 3 inches, with a minimum coil length of 10 feet.

Surface Condition

Foil will have a bright finish and will be essentially free of surface defects or edge delaminations as determined by visual examination. Special mirror finish material is available upon request.

Downloads:

Product brochures

  •  
  •  
  • Language
  •  
  • Fabricated Products High Performance Solutions
    高性能ソリューション
  • jp
  • Fabricated Products High Performance Solutions
    Высокоэффективные решения
  • ru

Product data sheet

  •  
  •  
  • Language
  • PDS number/_version
  • Pure Tungsten WS-3 Sheet 4202
    More
  • en
  • PD-7007_2
  • PURE TUNGSTEN WP-2 Plate 4203
    More
  • en
  • PD-7013_1