C17000 Beryllium Copper Alloy Metallurgical Specifications

Beryllium Copper Alloy C17000

General Characteristics
C17000 is a part of the “gold alloys” because of the shiny luster imparted by the substantial amount of beryllium present (~12 at. %). The gold alloys are the high-strength beryllium-coppers because they can attain yield strengths ranging from approximately 205 to 690 MPa (30 to 100 ksi) in the age-hardenable condition to above 1380 MPa (200 ksi) after aging. Conductivity ranging from about 20% to higher than 30% IACS is obtained in wrought products depending on the amount of cold work and the heat treatment schedule.

Typical uses: bellows, bourdon tubing, diaphragms, fuse clips, fasteners, lock washers, springs, switch parts, roll pins, valves, welding equipment.
Typical Chemical Composition

Weight % Be Ni+Co Ni+Co+Fe Cu

minimum 1.60 0.20 — Bal

maximum 1.79 — 0.60

Weight %	Be	Ni+Co	Ni+Co+Fe	Cu
minimum	1.60	0.20	—	Bal
maximum	1.79	—	0.60

Physical Properties

Characteristics		English	Metric
Nominal density (68°F/20°C)		0.298 lbs/in³	8.26 g/cm³
Specific heat (212 °F/100°C)		0.10 BTU/lb – °F	420 J/KG- °K
Melting range		1590-1800 °F	865-980 °C
Coefficient of thermal expansion	68°F – 212°F 20°C – 100°C	9.3 micro in/in- °F	16.7 micro m/m- °K
	68°F – 392°F 20°C – 200°C	9.4 micro in/in- °F	17.0 micro m/m- °K
	68°F – 572°F 20°C – 300°C	9.9 micro in/in- °F	17.8 micro m/m- °K
Thermal conductivity	20°C / 68°F	69 BTU/ft- hr – °F	118 W/m – °K
Thermal conductivity	200°C / 392°F	84 BTU/ft- hr – °F	145 W/m – °K
Electrical resistivity	20°C / 68°F	76.8 nΩ ∙ m
Electrical conductivity	Volumetric: 20°C / 68°F	15-33% IACS

Mechanical Properties

Temper	Tensile	Electrical conductivity,
TB00 – Solution Heat Treated	60- 78	410- 540	28- 53	190- 370	35-60	17-19
TD01 – Solution Heat Treated and Cold Worked: 1⁄4 Hard	75- 88	520- 610	45- 75	310- 520	10-35	16-18
TD02 – Solution Heat Treated and Cold Worked: 1⁄2 Hard	85- 100	590- 690	65- 90	450- 620	2-25	15-17
TD04 – Solution Heat Treated and Cold Worked: Hard (H)	100- 120	690- 625	80- 110	550- 760	2-8	15-17
TF00 – Precipitation Hardened (AT) Aged 3 h at 315 °C	150- 180	1030-1240	130- 165	895- 1140	4-10	22-25
TH01 – 1⁄4 Hard and Precipitation Heat Treated Cold rolled and aged 2 h at 315 °C	160- 185	1100-1280	135- 170	930- 1170	3-6	22-25
TH02 – 1⁄2 Hard and Precipitation Heat Treated Cold rolled and aged 2 h at 315 °C	170- 195	1170-1340	145- 175	1000- 1210	2-5	22-25
TH04 – Hard and Precipitation Heat Treated (HT) Aged 2 h at 315 °C	180- 200	1240-1380	100- 135	690- 930	1-4	22-25
TM00 – AM	Mill treated	100- 110	690- 760	75- 90	520- 620	18-22	20-33
TM01 – 1/4 HM	110- 120	760- 825	90- 110	620- 760	15-19	20-33
TM02 – 1/2 HM	120- 135	825- 930	100- 125	690- 860	12-16	20-33
TM04 – 3/4 HM	135- 150	930- 1030	110- 135	760- 930	9-13	20-33
TM06 – XHM	150- 160	1030-1100	125- 140	860- 965	9-12	20-33
TM08 – XHMS	160- 175	1100-1210	140- 165	965- 1140	3-7	20-33

Temper

Tensile

Electrical

conductivity,

Ultimate

Yield

Elongation in

50 mm (2 in.)

%IACS

KSI

MPa

KSI

MPa

TB00 – Solution Heat Treated

60-

410-

540

28-

190-

370

35-60

17-19

TD01 – Solution Heat Treated

and Cold Worked: 1⁄4 Hard

75-

520-

610

45-

310-

520

10-35

16-18

TD02 – Solution Heat Treated

and Cold Worked: 1⁄2 Hard

85-

100

590-

690

65-

450-

620

2-25

15-17

TD04 – Solution Heat Treated

and Cold Worked: Hard (H)

100-

120

690-

625

80-

110

550-

760

2-8

15-17

TF00 – Precipitation Hardened (AT)

Aged 3 h at 315 °C

150-

180

1030-1240

130-

165

895-

1140

4-10

22-25

TH01 – 1⁄4 Hard and Precipitation

Heat Treated Cold rolled and aged

2 h at 315 °C

160-

185

1100-1280

135-

170

930-

1170

3-6

22-25

TH02 – 1⁄2 Hard and Precipitation

Heat Treated Cold rolled and aged

2 h at 315 °C

170-

195

1170-1340

145-

175

1000-

1210

2-5

22-25

TH04 – Hard and Precipitation

Heat Treated (HT) Aged 2 h at 315 °C

180-

200

1240-1380

100-

135

690-

930

1-4

22-25

TM00 – AM

Mill treated

100-

110

690-

760

75-

520-

620

18-22

20-33

TM01 – 1/4 HM

110-

120

760-

825

90-

110

620-

760

15-19

20-33

TM02 – 1/2 HM

120-

135

825-

930

100-

125

690-

860

12-16

20-33

TM04 – 3/4 HM

135-

150

930-

1030

110-

135

760-

930

9-13

20-33

TM06 – XHM

150-

160

1030-1100

125-

140

860-

965

9-12

20-33

TM08 – XHMS

160-

175

1100-1210

140-

165

965-

1140

3-7

20-33

Specifications
- AMS – QQ-C-533
- ASTM – B194
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General Characteristics
C17000 is a part of the “gold alloys” because of the shiny luster imparted by the substantial amount of beryllium present (~12 at. %). The gold alloys are the high-strength beryllium-coppers because they can attain yield strengths ranging from approximately 205 to 690 MPa (30 to 100 ksi) in the age-hardenable condition to above 1380 MPa (200 ksi) after aging. Conductivity ranging from about 20% to higher than 30% IACS is obtained in wrought products depending on the amount of cold work and the heat treatment schedule.

Typical uses: bellows, bourdon tubing, diaphragms, fuse clips, fasteners, lock washers, springs, switch parts, roll pins, valves, welding equipment.
Typical Chemical Composition

Weight % Be Ni+Co Ni+Co+Fe Cu

minimum 1.60 0.20 — Bal

maximum 1.79 — 0.60

Weight %	Be	Ni+Co	Ni+Co+Fe	Cu
minimum	1.60	0.20	—	Bal
maximum	1.79	—	0.60

Physical Properties

Characteristics		English	Metric
Nominal density (68°F/20°C)		0.298 lbs/in³	8.26 g/cm³
Specific heat (212 °F/100°C)		0.10 BTU/lb – °F	420 J/KG- °K
Melting range		1590-1800 °F	865-980 °C
Coefficient of thermal expansion	68°F – 212°F 20°C – 100°C	9.3 micro in/in- °F	16.7 micro m/m- °K
	68°F – 392°F 20°C – 200°C	9.4 micro in/in- °F	17.0 micro m/m- °K
	68°F – 572°F 20°C – 300°C	9.9 micro in/in- °F	17.8 micro m/m- °K
Thermal conductivity	20°C / 68°F	69 BTU/ft- hr – °F	118 W/m – °K
Thermal conductivity	200°C / 392°F	84 BTU/ft- hr – °F	145 W/m – °K
Electrical resistivity	20°C / 68°F	76.8 nΩ ∙ m
Electrical conductivity	Volumetric: 20°C / 68°F	15-33% IACS

Mechanical Properties

Temper	Tensile	Electrical conductivity,
TB00 – Solution Heat Treated	60- 78	410- 540	28- 53	190- 370	35-60	17-19
TD01 – Solution Heat Treated and Cold Worked: 1⁄4 Hard	75- 88	520- 610	45- 75	310- 520	10-35	16-18
TD02 – Solution Heat Treated and Cold Worked: 1⁄2 Hard	85- 100	590- 690	65- 90	450- 620	2-25	15-17
TD04 – Solution Heat Treated and Cold Worked: Hard (H)	100- 120	690- 625	80- 110	550- 760	2-8	15-17
TF00 – Precipitation Hardened (AT) Aged 3 h at 315 °C	150- 180	1030-1240	130- 165	895- 1140	4-10	22-25
TH01 – 1⁄4 Hard and Precipitation Heat Treated Cold rolled and aged 2 h at 315 °C	160- 185	1100-1280	135- 170	930- 1170	3-6	22-25
TH02 – 1⁄2 Hard and Precipitation Heat Treated Cold rolled and aged 2 h at 315 °C	170- 195	1170-1340	145- 175	1000- 1210	2-5	22-25
TH04 – Hard and Precipitation Heat Treated (HT) Aged 2 h at 315 °C	180- 200	1240-1380	100- 135	690- 930	1-4	22-25
TM00 – AM	Mill treated	100- 110	690- 760	75- 90	520- 620	18-22	20-33
TM01 – 1/4 HM	110- 120	760- 825	90- 110	620- 760	15-19	20-33
TM02 – 1/2 HM	120- 135	825- 930	100- 125	690- 860	12-16	20-33
TM04 – 3/4 HM	135- 150	930- 1030	110- 135	760- 930	9-13	20-33
TM06 – XHM	150- 160	1030-1100	125- 140	860- 965	9-12	20-33
TM08 – XHMS	160- 175	1100-1210	140- 165	965- 1140	3-7	20-33

Temper

Tensile

Electrical

conductivity,

Ultimate

Yield

Elongation in

50 mm (2 in.)

%IACS

KSI

MPa

KSI

MPa

TB00 – Solution Heat Treated

60-

410-

540

28-

190-

370

35-60

17-19

TD01 – Solution Heat Treated

and Cold Worked: 1⁄4 Hard

75-

520-

610

45-

310-

520

10-35

16-18

TD02 – Solution Heat Treated

and Cold Worked: 1⁄2 Hard

85-

100

590-

690

65-

450-

620

2-25

15-17

TD04 – Solution Heat Treated

and Cold Worked: Hard (H)

100-

120

690-

625

80-

110

550-

760

2-8

15-17

TF00 – Precipitation Hardened (AT)

Aged 3 h at 315 °C

150-

180

1030-1240

130-

165

895-

1140

4-10

22-25

TH01 – 1⁄4 Hard and Precipitation

Heat Treated Cold rolled and aged

2 h at 315 °C

160-

185

1100-1280

135-

170

930-

1170

3-6

22-25

TH02 – 1⁄2 Hard and Precipitation

Heat Treated Cold rolled and aged

2 h at 315 °C

170-

195

1170-1340

145-

175

1000-

1210

2-5

22-25

TH04 – Hard and Precipitation

Heat Treated (HT) Aged 2 h at 315 °C

180-

200

1240-1380

100-

135

690-

930

1-4

22-25

TM00 – AM

Mill treated

100-

110

690-

760

75-

520-

620

18-22

20-33

TM01 – 1/4 HM

110-

120

760-

825

90-

110

620-

760

15-19

20-33

TM02 – 1/2 HM

120-

135

825-

930

100-

125

690-

860

12-16

20-33

TM04 – 3/4 HM

135-

150

930-

1030

110-

135

760-

930

9-13

20-33

TM06 – XHM

150-

160

1030-1100

125-

140

860-

965

9-12

20-33

TM08 – XHMS

160-

175

1100-1210

140-

165

965-

1140

3-7

20-33

Specifications
- AMS – QQ-C-533
- ASTM – B194

Beryllium Copper Alloy C17000

General Characteristics

Typical Chemical Composition

Physical Properties

Mechanical Properties

Specifications

General Characteristics

Typical Chemical Composition

Physical Properties

Mechanical Properties

Specifications

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