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Beryllium Copper C17200 Shim Manufacturer and Supplier in India

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Beryllium Copper C17200 Shim is a high accuracy flat-rolled alloy made from copper to be used as an exact spacing, alignment, pre-load and wear compensation component in difficult parts. Alloy 25 also known as C17200, CuBe2, CDA 172 and DIN 2.1247 is a beryllium alloy of the precipitation hardening category. The C17200 alloy shim is available in solution annealed and cold worked & age hardened temper; C17200 shim complies with the ASTM B17200 and ASME SB17200 standard for fabrication, forming, stamping and cutting. It is highly resistant to stress relaxation and fatigue depending on the temper and heat treatment. Sachin Steel is a reliable Beryllium Copper C17200 Shim Manufacturer, Supplier in India and provide precision shim stock for specialized industry applications.

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Table Of Content

Technical Data

Specifications of Beryllium Copper C17200 Shim

Parameter

Specification Details

Alloy Grade

UNS C17200, Alloy 25, CDA 172, ISO CuBe2, DIN 2.1247

Governing Standards

ASTM B194, ASME SB194 (Plate, Sheet, Strip, and Rolled Bar); ASTM B248 (General Tolerances)

Beryllium Content

1.80% to 2.00%

Thickness Range

0.025 mm (0.001 in) to 0.76 mm (0.030 in)

Product Forms

Stock rolls (100 mm, 150 mm, 300 mm wide), flat sheets (300 x 300 mm, 300 x 1000 mm), and pre-cut shims

Gauge Tolerances

Gauge tolerance per ASTM B248 precision strip tables, confirmed by gauge at quotation

Tempers Available

Solution Annealed (TB00/A), Cold Rolled (TD01 to TD04/H), Age Hardened (TF00/AT, TH04/HT)

Surface Finish

Bright annealed, smooth, clean mill finish suitable for photochemical etching, stamping, or plating

Density

8.25 g/cm³ (Annealed) / 8.36 g/cm³ (Age Hardened)

Certification

EN 10204 3.1 Mill Test Certificate detailing chemical analysis and physical test verification

Chemical Composition of Beryllium Copper C17200 Shim

Element

Minimum (%)

Maximum (%)

Beryllium (Be)

1.80

2.00

Cobalt + Nickel (Co + Ni)

0.20

—

Cobalt + Nickel + Iron (Co + Ni + Fe)

—

0.60

Iron (Fe)

—

0.10

Silicon (Si)

—

0.20

Aluminium (Al)

—

0.20

Lead (Pb)

—

0.02

Copper (Cu)

Balance

Balance

Physical Properties of Beryllium Copper C17200 Shim

Physical Property

Metric Value

Imperial Value

Density (annealed)

8.25 g/cm³

0.298 lb/in³

Density (age hardened)

8.36 g/cm³

0.302 lb/in³

Melting Range

865°C to 980°C

1590°F to 1800°F

Modulus of Elasticity (Tension)

128 GPa

18.5 × 106 psi

Poisson’s Ratio

0.30

0.30

Electrical Conductivity (annealed)

15% to 19% IACS

15% to 19% IACS

Electrical Conductivity (aged)

22% IACS minimum

22% IACS minimum

Thermal Conductivity (20°C)

105 W/m·K

60.7 BTU/ft·h·°F

Coefficient of Thermal Expansion (20–200°C)

17.0 × 10−6 /°C

9.4 × 10−6 /°F

Magnetic Permeability

Below 1.004 (virtually non magnetic)

Below 1.004

Mechanical Properties of Beryllium Copper C17200 Shim

Temper Code

Condition Label

Tensile Strength (MPa / ksi)

0.2% Yield Strength (MPa / ksi)

Elongation (%)

Hardness Range

TB00

Solution Annealed (A)

410 to 540 / 60 to 78

190 to 275 / 28 to 40

35 to 60%

HRB 45 to 78 (110–140 HV)

TD01

Cold Rolled 1/4 Hard (1/4 H)

515 to 650 / 75 to 94

415 to 550 / 60 to 80

10 to 35%

HRB 75 to 88 (150–190 HV)

TD02

Cold Rolled 1/2 Hard (1/2 H)

585 to 725 / 85 to 105

515 to 650 / 75 to 94

5 to 25%

HRB 88 to 96 (190–230 HV)

TD04

Cold Rolled Full Hard (H)

690 to 830 / 100 to 120

510 to 620 / 74 to 90

2 to 10%

HRB 96 to 102 (230–270 HV)

TF00

Age Hardened from TB00 (AT)

1140 to 1345 / 165 to 195

960 to 1170 / 140 to 170

3 to 10%

HRC 36 to 41 (350–400 HV)

TH04

Age Hardened from TD04 (HT)

1310 to 1550 / 190 to 225

1100 to 1310 / 160 to 190

1 to 4%

HRC 41 to 45 (400–450 HV)

Equivalent Grades of Beryllium Copper C17200 Shim

Country / Standard System

Grade Designation

Applicable Flat Product Standard

USA (UNS / CDA)

UNS C17200 / CDA 172 / Alloy 25

ASTM B194, ASME SB194, ASTM B248

International (ISO)

CuBe2

ISO designation CuBe2

European Union (EN)

CuBe2 / CW101C

EN 1654 (Strip for Springs & Connectors), EN 1652

Germany (DIN)

CuBe2 / 2.1247

DIN 17666

Japan (JIS)

C1720

JIS H3130 (copper beryllium alloy sheets and strips for springs)

United Kingdom (BS)

CB101

BS 2870 (Sheet, Strip & Foil)

China (GB)

QBe2

GB/T 5231

Russia (GOST)

BrB2

GOST 18175

Size Chart of Beryllium Copper C17200 Shim

Thickness (Inches)

Thickness (mm)

Weight (kg/m²)

Weight (lbs/ft²)

0.001 in

0.025 mm

0.21 kg

0.043 lbs

0.002 in

0.051 mm

0.42 kg

0.086 lbs

0.003 in

0.076 mm

0.63 kg

0.129 lbs

0.004 in

0.102 mm

0.84 kg

0.172 lbs

0.005 in

0.127 mm

1.05 kg

0.215 lbs

0.006 in

0.152 mm

1.26 kg

0.258 lbs

0.008 in

0.203 mm

1.68 kg

0.343 lbs

0.010 in

0.254 mm

2.10 kg

0.429 lbs

0.012 in

0.305 mm

2.51 kg

0.515 lbs

0.015 in

0.381 mm

3.14 kg

0.644 lbs

0.020 in

0.508 mm

4.19 kg

0.858 lbs

0.025 in

0.635 mm

5.24 kg

1.073 lbs

0.030 in

0.762 mm

6.29 kg

1.288 lbs

Weight Chart of Beryllium Copper C17200 Shim

Cut Shim Size

0.05 mm Thick

0.10 mm Thick

0.25 mm Thick

0.50 mm Thick

25 x 25 mm

0.3 g

0.5 g

1.3 g

2.6 g

50 x 50 mm

1.0 g

2.1 g

5.2 g

10.3 g

100 x 100 mm

4.1 g

8.3 g

20.6 g

41.3 g

150 x 150 mm

9.3 g

18.6 g

46.4 g

92.8 g

300 x 300 mm

37.1 g

74.3 g

185.6 g

371.3 g

Applications and Industrial Uses of Beryllium Copper C17200 Shim

  • Precision spacers and preload shims
  • Wear compensation shims in bearings and slides
  • Sensor and instrument spacing shims
  • Automotive Sensor Assemblies
  • Injection Molding Dies
  • Oil and Gas Downhole Equipment
  • Precision Bearing Assemblies
  • Electronic Relay Components
Application Industries

Frequently Asked Questions

Beryllium Copper C17200 Shim is a thin, precision-rolled copper alloy material used for spacing, alignment, preload adjustment, and wear compensation.

UNS C17200 is also known as Alloy 25, CDA 172, CuBe2, and DIN 2.1247.

Beryllium Copper C17200 Shim is commonly manufactured according to ASTM B194 and ASME SB194.

Beryllium Copper C17200 Shim is commonly manufactured according to ASTM B194 and ASME SB194.

Yes. C17200 is virtually non magnetic, with a permeability below 1.004, which suits sensors and precision assemblies.

Yes. Shim is stamped, cut and photochemically etched in the solution annealed temper, then age hardened. State burr direction and flatness requirements at quotation.

Sachin Steel Centre supplies C17200 shim stock from 0.025 mm (0.001 in) to 0.76 mm (0.030 in) in rolls, flat sheets and pre cut shims.

Gauge tolerance follows the ASTM B248 precision strip tables and depends on the gauge. Tell us the gauge and tolerance you need and we will confirm what the mill can hold.

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