Weller WSW SAC M1 Lead-Free Solder Wire with Silver and Copper - Mild Flux

Weller Brand: Weller

Weller WSW SAC M1 is a Lead-Free Solder Wire with 3% Silver and 0.5% Copper. It contains 3.5% mildly activated, no-clean flux cores.

  • Composition 3% Silver (Ag), Copper (Cu) 0.5%, remainder Tin (Sn)
  • Melting point 217 to 221°C
  • Mildly activated, no-clean flux cores (3.5%)
  • Available in a range of wire diameters and spool weights
Description Image Product Buy Pricing (Ex VAT) Weight Wire Diameter Wire Gauge (SWG) Flux Type Leaded / Lead-Free Melting Temperature Solder Alloy Type
Weller T0051388199 WSW SAC M1 96.5/3/0.5 Solder Wire 0.3mm 100g
Weller T0051388199 WSW SAC M1 96.5/3/0.5 Solder Wire 0.3mm 100g
Standard range
Order code: 85-6524
MPN: T0051388199

Despatched same day - 4 in stockAdditional quantity lead time 3 weeks
1+ £31.30
5+ £30.29
Price per unit Ex VAT 		100g 0.30mm 31 No clean Lead-free 217°C Sn96.5Ag3Cu0.5 Wire
Weller T0051388299 WSW SAC M1 96.5/3/0.5 Solder Wire 0.5mm 100g
Weller T0051388299 WSW SAC M1 96.5/3/0.5 Solder Wire 0.5mm 100g
Standard range
Order code: 85-6522
MPN: T0051388299

Despatched same day - 1 in stockAdditional 10 due on 23/06/2026
1+ £28.32
5+ £28.08
Price per unit Ex VAT 		100g 0.50mm 25 No clean Lead-free 217°C Sn96.5Ag3Cu0.5 Wire
Weller T0051388599 WSW SAC M1 96.5/3/0.5 Solder Wire 0.8mm 250g
Weller T0051388599 WSW SAC M1 96.5/3/0.5 Solder Wire 0.8mm 250g
Extended range
Order code: 85-6528
MPN: T0051388599

Available to back orderBack-order availability date - 30/06/2026
1+ £54.21
5+ £53.30
Price per unit Ex VAT 		250g 0.8mm 21 No clean Lead-free 217°C Sn96.5Ag3Cu0.5 Wire
Weller T0051388699 WSW SAC M1 96.5/3/0.5 Solder Wire 1.0mm 250g
Weller T0051388699 WSW SAC M1 96.5/3/0.5 Solder Wire 1.0mm 250g
Extended range
Order code: 85-6526
MPN: T0051388699

Available to back orderBack-order availability date - 30/06/2026
1+ £56.64
Price per unit Ex VAT 		250g 1mm 19 No clean Lead-free 217°C Sn96.5Ag3Cu0.5 Wire
Weller T0051386599 WSW SAC M1 96.5/3/0.5 Solder Wire 0.3mm 500g
Weller T0051386599 WSW SAC M1 96.5/3/0.5 Solder Wire 0.3mm 500g
Extended range
Order code: 85-6540
MPN: T0051386599

Available to back orderBack-order availability date - 30/06/2026
1+ £114.53
5+ £113.89
Price per unit Ex VAT 		500g 0.30mm 31 No clean Lead-free 217°C Sn96.5Ag3Cu0.5 Wire
Weller T0051386499 WSW SAC M1 96.5/3/0.5 Solder Wire 0.5mm 500g
Weller T0051386499 WSW SAC M1 96.5/3/0.5 Solder Wire 0.5mm 500g
Extended range
Order code: 85-6538
MPN: T0051386499

Available to back orderBack-order availability date - 30/06/2026
1+ £109.99
5+ £109.38
Price per unit Ex VAT 		500g 0.50mm 25 No clean Lead-free 217°C Sn96.5Ag3Cu0.5 Wire
Weller T0051386399 WSW SAC M1 96.5/3/0.5 Solder Wire 0.8mm 500g
Weller T0051386399 WSW SAC M1 96.5/3/0.5 Solder Wire 0.8mm 500g
Extended range
Order code: 85-6536
MPN: T0051386399

Available to back orderBack-order availability date - 30/06/2026
1+ £97.84
5+ £97.30
Price per unit Ex VAT 		500g 0.8mm 21 No clean Lead-free 217°C Sn96.5Ag3Cu0.5 Wire
Weller T0051386299 WSW SAC M1 96.5/3/0.5 Solder Wire 1.0mm 500g
Weller T0051386299 WSW SAC M1 96.5/3/0.5 Solder Wire 1.0mm 500g
Extended range
Order code: 85-6534
MPN: T0051386299

Available to back orderBack-order availability date - 30/06/2026
1+ £99.82
5+ £99.02
Price per unit Ex VAT 		500g 1mm 19 No clean Lead-free 217°C Sn96.5Ag3Cu0.5 Wire
Weller T0051386199 WSW SAC M1 96.5/3/0.5 Solder Wire 1.2mm 500g
Weller T0051386199 WSW SAC M1 96.5/3/0.5 Solder Wire 1.2mm 500g
Extended range
Order code: 85-6532
MPN: T0051386199

Available to back orderBack-order availability date - 30/06/2026
1+ £93.31
5+ £92.78
Price per unit Ex VAT 		500g 1.2mm 18 No clean Lead-free 217°C Sn96.5Ag3Cu0.5 Wire
Weller T0051386099 WSW SAC M1 96.5/3/0.5 Solder Wire 1.6mm 500g
Weller T0051386099 WSW SAC M1 96.5/3/0.5 Solder Wire 1.6mm 500g
Extended range
Order code: 85-6530
MPN: T0051386099

Available to back orderBack-order availability date - 30/06/2026
1+ £93.31
5+ £92.78
Price per unit Ex VAT 		500g 1.6mm 16 No clean Lead-free 217°C Sn96.5Ag3Cu0.5 Wire
Order codeMftrs Part No.DiameterWeight
85-6524T00513881990.3mm100g
85-6522T00513882990.5mm100g
85-6528T00513885990.8mm250g
85-6526T00513886991.0mm250g
85-6540T00513865990.3mm500g
85-6538T00513864990.5mm500g
85-6536T00513863990.8mm500g
85-6534T00513862991.0mm500g
85-6532T00513861991.2mm500g
85-6530T00513860991.6mm500g


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