SILVER ALLOYS
SILVER ALLOYS
Silver alloys are characterized by good brazing properties, exhibiting good shearing, fatigue and impact stress strength. They are resistant to acids and alkalis. Due to good wettability, they may be used for joining most metals and alloys, including: carbon, alloy and stainless steels as well as copper and its alloys.
Product | Composition % | Melting temp. range | Working temperature | Standard PN-EN ISO 17672 (PN-EN 1044) |
||||
---|---|---|---|---|---|---|---|---|
Ag | Cu | Zn | Sn | Other | °C | °C | ||
Ag12 | 12 | 48 | 40 | - | - | 800-830 | 830 | Ag 212 (AG 207) |
Ag20 | 20 | 44 | 36 | - | 0.15 | 690-810 | 810 | (AG 206) |
Ag25 | 25 | 41 | 34 | - | - | 700-790 | 780 | Ag 225 (AG 205) |
Ag25Sn | 25 | 40 | 33 | 2 | - | 680-760 | 750 | Ag 125 (AG 108) |
Ag30 | 30 | 38 | 32 | - | - | 680-765 | 750 | Ag 230 (AG 204) |
Ag30Sn | 30 | 36 | 32 | 2 | - | 665-755 | 740 | Ag 130 (AG 107) |
Ag33 | 33 | 34 | 33 | - | 0.15 | 700-740 | 730 | - |
Ag34Sn | 34 | 36 | 27.5 | 2.5 | - | 630-730 | 710 | Ag 134 (AG 106) |
Ag40Sn | 40 | 30 | 28 | 2 | - | 650-710 | 690 | Ag 140 (AG 105) |
Ag44 | 44 | 30 | 26 | - | - | 675-735 | 730 | Ag 244 (AG 203) |
Ag45 | 45 | 30 | 25 | - | - | 730 | Ag 245 | |
Ag45Sn | 45 | 27 | 25 | 3 | - | 640-680 | 670 | Ag 145 (AG 104) |
Ag49NiMn | 49 | 16 | 23 | - | Mn7.5 Ni 4.5 | 680-705 | 690 | Ag 449 (AG 502) |
Ag56Sn | 56 | 22 | 17 | 5 | - | 620-655 | 650 | Ag 156 (AG 102) |
Ag70 | 70 | 20 | 10 | - | - | 690-740 | 730 | Ag 270 |
Ag72 | 72 | 28 | - | - | - | 780 | 780 | Ag 272 (AG 401) |
FLUX COATED SILVER ALLOYS
In attempting to satisfy the requirements of even the most discerning customers we supply flux coated silver alloys in various options. Our team of engineers is always on hand to help in the choice of the correct solution, selecting the right alloy for the particular use and precisely determining the degree to which it is covered.
Product | Melting temp. range | Working temperature | Standard PN-EN ISO 17672 (PN-EN 1044) |
---|---|---|---|
°C | °C | ||
Ag25Sn FC | 680-760 | 750 | Ag 125 (AG 108) |
Ag30Sn FC | 665-755 | 740 | Ag 130 (AG 107) |
Ag33 FC | 700-740 | 730 | - |
Ag34Sn FC | 630-730 | 710 | Ag 134 (AG 106) |
Ag40Sn FC | 650-710 | 690 | Ag 140 (AG 105) |
Ag44 FC | 675-735 | 730 | Ag 244 (AG 203) |
Ag45Sn FC | 640-680 | 670 | Ag 145 (AG 104) |
Ag56Sn FC | 620-655 | 650 | Ag 156 (AG 102) |
REPLACEMETS FOR CADMIUM ALLOYS
The EU Commission Regulation No. 494/2011 came into force on 10 December 2011 prohibiting the use of cadmium alloys. As a result, LUT-SPAW has introduced cadmium alloys equivalents. As an alternative to this type of alloy we will suggest alloys containing tin. This element is added in order to lower the melting point and improve the wettability of solder on the silver base.
Recommended cadmium free alternative | Silver alloys with cadmium | ||||
---|---|---|---|---|---|
Product | Melting temp. range | Tensile strength | Product | Melting temp. range | Tensile strength |
°C | MPa | °C | MPa | ||
Ag20 | 690-810 | 380 | L-Ag20Cd | 605-765 | 350 |
Ag25 | 700-800 | 380 | |||
Ag25Sn | 680-760 | 360 | |||
Ag30Sn | 665-755 | 360 | L-Ag30Cd | 600-690 | 380 |
Ag33 | 700-740 | 535 | |||
Ag34Sn | 630-730 | 360 | |||
Ag40Sn | 650-710 | 350 | L-Ag40Cd | 595-630 | 410 |
Ag44 | 675-735 | 400 | |||
Ag45Sn | 640-680 | 350 | |||
Ag49NiMn | 680-705 | 350 | |||
Ag45Sn | 640-680 | 350 | L-Ag45Cd | 620-635 | 410 |
Ag49NiMn | 680-705 | 350 | |||
Ag56Sn | 620-655 | 410 |
If you have any questions or queries please do not hesitate to contact us.