Solder Products (Senju Metal Industry)

Senju Metal Agency

"Eco-Solder"…Environmentally Friendly Lead-Free Solder

Solder has a history of 5,000 years, and Sn-Pb solder, which consists of tin and lead, has played a fundamental role in this history. In recent years, however, groundwater contamination by lead has become a problem, and various regulations have been enacted to eliminate lead as an environmentally hazardous substance. Recognizing that environmental protection in the 21st century is a social mission, Senju Metal has conducted intensive research and developed "Eco Solder", a lead-free solder.

Senju Metal has developed the "Eco Solder", a lead-free solder, based on its diligent research and development. Senju Metal is able to pluralistically respond to the introduction of lead-free solder and in-line mounting in a variety of ways, as well as provide the most advanced
" Eco Soldering Solution™ " by building a comprehensive technological base and support system from various perspectives.

JIS Z 3282 / ISO9453 Standards for lead-free solders

Type	Symbol		Product Name
Type	1	2	Product Name
Sn 96.5 Ag 3 Cu 0.5	Sn 96.5 Ag 3 Cu 0.5	A30C5	M705

Chemical Composition Mass %
Sn	Pb	Sb	Bi	Cu	Au	In	Ag	Al	As	Cd	Fe	Ni	Zn
Remain	0.05 max	0.10 max	0.10 max	0.3 to 0.7	0.05 max	0.10 max	2.8 to 3.2	0.001 max	0.03 max	0.002 max	0.02 max	0.01 max	0.001 max

Eco-Solder Products and Shape Guide

“Eco-Solder”, a lead-free solder, has higher reliability than conventionally used Sn-Pb solder, and is available in a wide range of products to suit different working temperatures. Depending on alloy composition, the shapes that can be supplied may be limited. In addition, we also offer “Oxidation Inhibited E Series” and “Solder for Tank Supply (without Copper)”, so please feel free to contact us.

Resin Flux-cored Solder

Solder Paste

Bar Solder

Flux

Part No.	Alloy Composition (wt %)	Melting Temperature (°C)			Shape
Part No.	Alloy Composition (wt %)	Solid Phase Line	Peak Temperature*	Liquid Phase Line	Bar	Resin Flux cored	Ball	Paste	Preform
M-Series: Solid Phase Temperature 200 - 250 °C
M705	Sn-3.0Ag-0.5Cu	217	219	220	●	●	●	●	●
M30	Sn-3.5Ag	221	223	223	●	●	●	●	●
M31	Sn-3.5Ag-0.75Cu	218	219	219	●	●	●	●	●
M714	Sn-3.8Ag-0.7Cu	217	219	225	●	●	●	●	●
M715	Sn-3.9Ag-0.6Cu	217	219	226	●	●	●	●	●
M710	Sn-4.0Ag-0.5Cu	217	219	229	●	●	●	●	●
M34	Sn-1.0Ag-0.5Cu	217	219	227	●	●	●	●	●
M771	Sn-1.0Ag-0.7Cu	217	219	224	●	●	●	●	●
M35	Sn-0.3Ag-0.7Cu	217	219	227	●	●	●	●	●
M20	Sn-0.75Cu	227	229	229	●	●	●	●	●
M24MT	Sn-0.7Cu-Ni-P-Ge	228	230	230	●	●			●
M24AP	Sn-0.6Cu-Ni-P-Ge	227	228	228	●	●			●
M40	Sn-1.0Ag-0.7Cu-Bi-In	211	222	222		●		●
M47	Sn-0.3Ag-0.7Cu-0.5Bi-Ni	216	228	228		●		●
M773	Sn-0.7Cu-0.5Bi-Ni	225	229	229	●	●		●
M53	Sn-3.0Ag-3.0Bi-3.0In	198	214	214		●		●	●
M794	Sn-3.4Ag-0.7Cu-3.2Bi-3.0Sb-Ni-x	209	221	221		●	●	●
M731	Sn-3.9Ag-0.6Cu-3.0Sb	221	224	226	●	●		●	●
M716	Sn-3.5Ag-0.5Bi-8.0In	197	208	214		●		●
M10	Sn-5.0Sb	240	243	243	●	●	●	●	●
M14	Sn-10Sb	245	248	266	●	●	●	●	●
M709	Sn-0.5Ag-6.0Cu	217	226	378	●
M760	Sn-5.0Cu-0.15Ni	228	229	365	●
M711	Sn-0.5Ag-4.0Cu	217	226	344	●
M60	Sn-2.3Ag-Ni-Co	221	222	225			●
M770	Sn-2Ag-Cu-Ni	218	220	224			●	●
M758	Sn-3Ag-3Bi-0.8Cu-Ni	205	215	215			●	●	●
M84	Sn-3.0Ag-0.5Cu-Ni	219	223	324		●
M85	Sn-0.3Ag-2.0Cu-Ni	218	231	332		●
M86	Sn-0.3Ag-0.7Cu-Ni	220	232	330		●
L-Series: Solid Phase Temperature <200 °C
L20	Sn-58Bi	139	141	141	●	●	●	●	●
L23	Sn-57Bi-1.0Ag	138	140	204	●	●	●	●	●