C17460, Cu-Ni-Be, ASTM B768, Strip, Sheet

C17460, Cu-Ni-Be, ASTM B768, Strip, Sheet
STEELMAX Metal Story

C17460 동합금은 Copper+Nickel + Beryllium 합금입니다.
베릴륨 동합금은 Copper Alloy 중 가장 큰 강도와 경도,

높은 전기 전도성 (high electrical conductivity),
아주 우수한 성형성 (formability) 성질의 Strip and Sheet 재료입니다.

C17460, C17450, C17450 베릴륨 동합금은 내피로강도 (fatigue resistance)
응력 이완 저항성 (stress relaxation resistance) 특징 동합금입니다.

C17460 동합금은 탄성계수 (elastic modulus) 138 GPa,
Temper condition : solution heat treated, cold worked,

and precipitation heat treated TH03 (3/4HT),
TH04 (Hard) 등의 공급 조건이 있습니다.

C17460 ASTM B768 은 Cu-Co-Be Alloy, Cu-Ni-Be Alloy
Strip and Sheet 규정으로, 베릴륨 동합금에 관한 규정입니다.

C17460 은 ASTM B888 Electrical Connectors or Spring Contacts
규정의 스프링 재료로도 사용되는 동합금입니다.

※ Formability (성형성)
파괴, 국부화 된 얇아짐 (thining) 또는 주름 (wrinking)이 발생되지 않고
재료를 필요한 형태로 만들 수 있는 성능을 말합니다.

※ Electrical Conductivity (전기전도도 : 電氣傳導度)
전기, 전자 관련 재료에서 필요한 수치로, 전류를 잘 통과하는지
정도를 말하며, 일반적으로는 열전도도와 비례합니다.

※ Fatigue Strength (피로강도 : 疲勞强度)
A property of resistance for breaking to be generated by repeated stress
반복되는 응력으로서 생기는 파괴에 견디는 성질

※ Temper (질별 : 質別)
금속 또는 합금에 요구되는 특정한 물리적 및/또는 기계적 성질을
부여하는 공정으로 (예를 들어 기계적 처리 및/또는 열처리) 후의
제품의 상태를 말합니다.

The state of material after the necessary treatment is processed for
the purpose of giving the particular physical or mechanical property
to wrought products and alloy products.

For the treatment to wrought copper and copper alloys,
heat treatment and cold working are known.
The symbol and concept of temper specified in the existing
JIS are shown as follows.

C17460, ASTM B768
Chemical composition (%)	Beryllium (Be)	0.15~0.50
	Nickel (Ni)	1.0~1.4
	Iron (Fe)	0.20 max
	Zirconium (Zr)	0.50 max
	Tin (Sn)	0.25 max
	Silicon (Si)	0.20 max
	Aluminum (Al)	0.20 max
	Copper (Cu)	remainder
	Copper + sum of named elements	99.5 min

Standard Temper	Former Temper	Tensile strength (MPa)	Yield strength (MPa)	Elon. (%)	Rockwell B
TH03	3/4H	790~930	655~790	11 min	98~105
TH04	HT	825~965	720~860	10 min	99~106

ASTM B601 Designation Copper and Copper Alloy
Letter	Name
A	Annealed (Mill Hardened)
1/4H	Solution Heat Treated and Cold Worked 1/4 Hard
1/2H	Solution Heat Treated and Cold Worked 1/2 Hard
3/4H	Solution Heat Treated and Cold Worked 3/4 Hard
H	Solution Heat Treated and Cold Worked Hard
AT	Precipitation Hardened
ATLH	Precipitation Hardened-Low hardness
ATHH	Precipitation Hardened-High hardness
1/4HT	1/4 Hard and Precipitation Heat Treated
1/2HT	1/2 Hard and Precipitation Heat Treated
3/4HT	3/4 Hard and Precipitation Heat Treated
HT	Hard and Precipitation Heat Treated
1/8TS	1/8 Hard and Spinodal Hardened
1/4TS	1/4 Hard and Spinodal Hardened
1/2TS	1/2 Hard and Spinodal Hardened
3/4TS	3/4 Hard and Spinodal Hardened
AM	Solution Heat Treated (Mill Hardened)
1/4HM	1/4 Hard (Mill Hardened)
1/2HM	1/2 Hard (Mill Hardened)
3/4HM	3/4 Hard (Mill Hardened)
HM	Hard (Mill Hardened)
SHM	Spring Hard (Mill Hardened)
XHM	Extra Hard (Mill Hardened)
XHMS	Extra Spring Hard (Mill Hardened)