Sn–Bi, Sn–Ag ve Sn–Zn kurşunsuz lehim alaşımlarının mikroyapısı ve mekanik özellikleri Özet

MELTING POINT RANGE
COMMENTS
42 Sn/58 Bi	138°C eutectic	Established, availability concern of Bi
91 Sn/9 Zn	199°C eutectic	High drossing, corrosion potential
96.5 Sn/3 Ag/0.5 Cu	217°C	High strength, good thermal fatigue
95.5 Sn/3.8 Ag/0.7 Cu	217°C	High strength, good thermal fatigue
93.5 Sn/3 Sb/2 Bi/1.5 Cu	218°C eutectic	High strength, excellent thermal fatigue
95.5 Sn/3.5 Ag/1 Zn	218°C - 221°C	High strength, good thermal fatigue
96.5 Sn/3.5 Ag	221°C eutectic	High strength and high melting point
95 Sn/5 Ag	221°C - 240°C	High strength, good thermal fatigue
96 Sn/4 Ag	221°C	High melting point and high strength
97.5 Sn/2.5 Ag	221°C - 226°C	High strength, good thermal fatigue
97 Sn/2 Cu/0.8 Sb/0.2 Ag	226°C - 228°C	High melting point
99.3 Sn/0.7 Cu	227°C	High strength and high melting point
97 Sn/Cu3	227°C - 300°C	High melting point and high strength
95 Sn/5 Sb	232°C - 240°C	Good shear strength and thermal fatigue
65 Sn/25 Ag/10 Sb	233°C	Motorola patent, high strength
96 Sn/4Cu	235°C	High melting point and high strength

Lead Free
PRODUCT NO	ALLOY COMPOSITION							COMMON REQUREMENTS					SOLIDUS		LIQUIDUS
	Sn	Pb	Ag	Bi	Cu	Zn	BAR		WIRE	PASTE	PAINT	°C		°C
24	95.5	-	3.8	-	0.7	-			-	-	-	-		MP217
25	96	-	2.5	1	0.5	-			-	-	-	-		MP222
26	96.5	-	3.5	-	-	-				-	-	221		221
27	99.3	-	-	-	0.7	-			-	-	-	227		227
28	100	-	-	-	-	-			-	-	-	-		MP232