Sheet / Plate / Foil

H.C. Starck Solutions tantalum sheet and foil are popular for chemical processing applications, where customers can convert it into lining for columns, vessels, tanks, reactors, parts for heat exchangers, and more.

High Temperature Processing

Industrial Processing, Aerospace & Defense, Electronics

Mo, Mo EBM, CuMoCu, MoCu, NiMoNi, TZM, MP35N, MoLa, Nb, Stabil. Nb, Nb EBM, Ta, Ta EBM, TaW, W, (W, Ni, Fe), NRC76, Ultra 76, Ultra 76 Plus, Ta10W

 

TANTALUM SHEET, PLATE, ROUND DISK AND FOIL

Customers transform our tantalum plate into products for military, chemical processing, and other anti-corrosion type applications.

Both tantalum sheet and plate are used by customers in the manufacturer of components for anticorrosion equipment. Round discs cut from tantalum plate are employed to repair and reinforcement work in anti-corrosion equipment.

Because of their strength and workability, very thin sheets of tantalum can be clad to other surfaces, providing superior corrosion protection and cost effectiveness.

Our tantalum sheet and plate are supplied with a cold-rolled and chemically cleaned surface. The sheet and plate may be locally conditioned to remove defects, provided that thickness tolerance is maintained.

Depending on your specifications and needs, all of our tantalum sheet, plate, and foil are visually inspected for slivers, laminations, excessive roll marks and handling scratches.

ULTRA76 Ta alloys offer higher corrosion resistance in most environments generating value added by extending product life time, reducing material thickness and improving processes throughput.

• Higher temperatures possible, shorter cooling/heating cycle times
• Constant surface finish (Ra<0.8 micrometers)
• Material only from non-conflict sources, H.C. Starck Solutions is EICC certified
• Uniform wall thickness
• Best flatness for explosion clad applications

Dimensions

Form	Thickness, Dia., Wall inches (mm)	Width, Length inches (mm)
Tantalum Foil	0.001“ to 0.005“ (0.025 to 0.1270 mm)	12“ maximum width x coil (30.5 mm max. width x coil)
Tantalum Sheet	0.005“ to 0.020“ (0.1270 to 0.50 mm)	36“ maximum width x coil (915 mm max. width x coil)
Tantalum Sheet	0.015“ to 0.060“ (0.380 to 1.524 mm)	40“ width x coil (1000 mm width x coil)
Tantalum Round Disk	Thickness: 0.060″ to 0.125″ (1.524 to 3.175 mm)	Up to 37 in diameter
Tantalum Plate	0.060“ to 0.125“ (1.524 to 3.175 mm)	width not to exceed 40“ (1000 mm)

*Total weight of finished plate not to exceed 350 Ib.

Mechanical Properties for Sheet and Plate

Grade and Form	Ultimate Tensile Strength min, psi (MPa)	Yield Strength min, psi (MPa) (2% Offset)	Elongation min, % (1 inch GL)
Unalloyed Tantalum (R05200), (R05400) Plate, Sheet and Strip 0.003“ – 0.060“ thick >_ 0.060“ thick	30 000 (207) 25 000 (172)	20 000 (138) 15 000 (103)	20 30
97.5% Tantalum, 2.5% Tungsten, (R05252) Sheet and Strip Plate	40 000 (276) 40 000 (276)	30 000 (207) 28 000 (193)	20 20

Please contact us for additional sizes and requirements.

Tantalum and Tantalum Alloy Products:

Refer to Product Data Sheets for Tantalum for sizes:

PD-7033 NRC Ultra 76 Tantalum Alloy (Ta 2.5%W)
PD-7035 NRC Tantalum (UNS R05200)
PD-7036 NRC Tantalum Beam Melted Tantalum (ETA) (UNS R05200)

TUNGSTEN PLATE, SHEET, AND FOIL

Tungsten mill products available from H.C. Starck Solutions 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.

MOLYBDENUM PLATE, SHEET AND FOIL

Vacuum Arc-Cast Molybdenum Mill Products

The VAC method of consolidation is unique to H.C. Starck Solutions. Materials made by this process is available exclusively from H.C. Starck Solutions and yields a homogeneous product which is very low in residual elements, provides better strength at elevated temperatures and exhibits excellent workability, weld-ability and good machining characteristics.

In the vacuum arc-casting process, 99.95% pure molybdenum powder, ultra-pure molybdenum powder or one of our molybdenum-base alloys is pressed, sintered, and melted (all under vacuum) to produce a casting weighing up to one ton. This arc-casting is then further worked by extrusion followed by forging or rolling.

Where highest purity, maximum toughness, and ductility at low temperatures are required, arc-cast molybdenum mill products are available in a special low-carbon grade. This material is 99.97% pure molybdenum and contains a maximum of .010% residual carbon, compared to the nominal .030% maximum carbon content of normal arc-cast molybdenum.

Workability and machinability are also superior with this special product.

H.C. Starck Solutions produces a wide range of molybdenum and molybdenum alloy mill products using two primary consolidation methods; vacuum arc-casting (AC) and powder metallurgy (PM). The availability of products from both of these established processes gives users many options in selecting a material to satisfy their specific application requirements. Mill products available from either process include forging billets, bar, rod, sheet, plate and foil.

Refer to Product Data Sheets for further Molybdenum sizes:

Molybdenum Forms and Tolerances
Form	Thickness	Width	Length
Sheet	0.005” to 0.187”	24” max.	sheet **
	(0.127 to 4.750 mm)	(610 mm)	(2.438 m) or coil*
Foil	0.001” to 0.0049”	1/2” to 12”	coil
	(0.0254 to 0.12 mm)	( 12.7 to 305 mm)

Molybdenum Pure Products

PD-7000 Pure Molybdenum AC Bar Low Carbon
PD-7006 Pure Molybdenum AC Bar
PD-7009 Pure Molybdenum PB PM Bar
PD-7010 Pure Molybdenum PSB PM Billet
PD-7029 Pure Molybdenum Plate PP-22-2
PD-7014 Pure Molybdenum Sheet Premium Grade PS-100-2
PD-7016 Pure Molybdenum Sheet Standard Grade PS-300-2
PD-7017 Pure Molybdenum Foil F-21-5
PD-7026 Pure Molybdenum ABL AC Bar Low Carbon
PD-7028 Pure Molybdenum ASL AC Sheet 3202 Low Carbon
PD-7030 Pure Molybdenum APL AC Plate 3203 Low Carbon

Molybdenum Alloys Products

PD-7001 Molybdenum Alloy TZM PM Sheet 2702
PD-7011 Molybdenum Alloy TZM PM Plate 2703
PD-7004 Molybdenum Alloy TZM AC Plate 3403
PD-7005 Molybdenum Alloy TZM AC Sheet 3402
PD-7021 Molybdenum Alloy TZM AFBT AC Forging Billet
PD-7025 Molybdenum Alloy TZM ABT AC Bar
PD-7031 Molybdenum Alloy P/M TZM PM Billet
PD-7043 Molybdenum Alloy ODS Mo-La PM Sheet 2602
PD-7044 Molybdenum Alloy ODS Mo-La PM Plate 2603
PD-7020 Molybdenum Alloy AFB-30W AC Forging Billet
PD-7022 Molybdenum Alloy AFB AC Forging Billet
PD-7024 Molybdenum Alloy AB-30W AC Bar
PD-7008 Molybdenum Alloy PBT PM Bar