CW451K, PB 102, Phosphorus Bronze, EN 1652

CW451K, PB 102, Phosphorus Bronze, EN 1652
STEELMAX Metal Story

CW451K 재질은 Copper 에, 주석을 합금한 청동 (bronze)이고
Phosphorus (P : 燐 : 인) 0.01~0.4% 수준을 합금 해, 인청동 입니다.

청동에 인을 합금하면 1.2% 수준까지, Hardness 상승이
거의 비례적으로 상승하고, 연신율은 하락하는 효과가 있습니다.

CW451K 재질에 인을 0.4% maximum 수준 합금하면, 내식성
기계적 성질 (mechanical properties), 내마모성이 향상됩니다.

CW451K 재질은 냉간 성형성, 기계 가공성이 좋고, 용접성이 좋아,
butting welding, brazing, soldering 성능이 우수합니다.

Application to pump and valve spindles, sleeve, bushing,spring
switch, bellows, shafts, flanges, sliding piece, connector,

gears, worm gears, marine applications, aircraft applications,
chemical applications, electronic and electronic apparatus 용도입니다.

CW451K Density(g/㎤) : 8.9, Electrical conductivity (% IACS) : 17
Modulus elasticity 120 GPa, 물리적 성질입니다.

※ IACS
The annealed standard soft copper which is internationally adopted
as the standard of electric resistance (or electric conductivity)
The electrical resistivity is specified as 1.7241×10-²µΩm
(100% IACS in electric conductivity)

※ Electrical Resistivity
A value of electric resistance of the material having unit length
and unit area of cross-section.
The value expressed in µΩm

CW451K
Chemical composition (%)	Copper (Cu)	Rest
	Iron (Fe)	0.1 max
	Nickel (Ni)	0.2 max
	Phosphorus (P)	0.01~0.4
	Lead (Pb)	0.02 max
	Tin (Sn)	4.5~5.5
	Zinc (Zn)	0.2 max

CW451K, DIN-EN 1652
Temper	Tensile strength (MPa)	Yield strength (MPa)	Elongation
Temper	Tensile strength (MPa)	Yield strength (MPa)	A50mm	A
R310	310~390	250 max	45 % min	55 % min
R400	400~500	240 min	14 % min	17 % min
R490	490~580	430 min	8 % min	10 % min
R550	550~640	510 min	4 % min	–
R630	630~720	600 min	2 % min	–
R690	690 min	670 min	–	–
A50mm : up to 2.5mmt, A : over 2.5mt