Solder:
Tin / Lead Solder is available in a variety of compositions, and it is the relative percentages of the metallic components which determine the melting point of the solder. Lead-free solder often contains alternative metallic components such as antimony, copper or silver. The concentration of tin is directly related to the tensile and shear strength of the solder. As the concentration of tin increases, the solder will have greater tensile and shear strengths.
95/5 Tin/Antimony – Lead –free for jewelry applications, copper pipe/tubes for potable water.  air conditioning, refrigeration. High heat resistance and excellent wetting

63/37 Tin/Lead – Has a low melting point, is eutectic and has exceptional flow. For electronics

60/40 Tin/Lead – Similar to 63/37,  it’s low melting range makes it ideal for delicate work.

50/50 Tin/Lead – General purpose solder. Joining sheet metal, pipe tubing, etc.

40/60 Tin/Lead – A good general purpose solder for radiator repair.

30/70 Tin/Lead – Automobile body solder for filling dents and seams

Sn96 Tin/Silver –   lead-free alternative for the standard tin/lead solder, made with silver. Higher joint strength than tin/lead solders.  Food processing industry

Cored Solders:

Rosin Flux:  always used for electrical work because of the residues which remain after solder are non corrosive and non-conductive.  This means there cannot be any damage to delicate wires and no electrical paths can form to cause electrical malfunction of the equipment.

Acid Flux: strong chemical action that can cut through heavy tarnishes and oxides. For this reason, it’s used for general purpose soldering.

Tin (Sn)Lead(Pb)Antimony (Sb)Silver/ CopperSpecsMelting(F)
-100---621
5Rem.35-QQS-571586-594
10Rem-2.0 AgQQS-571514-570
10Rem--ASTM-B23514-576
20Rem.35-ASTM-B23361-531
20Rem1-QQS-571361-530
30Rem--ASTM-B23361-491
30Rem1.6-QQS-571361-490
35Rem--ASTM-B23361-447
35Rem1.8-QQS-571361-475
40Rem--QQS-571361-460
40Rem2.1-ASTM-B23365-448
50Rem--ASTM-B23361-421
50Rem.35-QQS-571361-420
58Rem--ASTM-B23361-369
60Rem--ASTM-B23361-375
60Rem.35-QQS-571361-374
62Rem.352.0 AgQQS-571354
63Rem--ASTM-B23361
63Rem.35-QQS-571361
70Rem--ASTM-B23361-377
70Rem.35-QQS-571361-380
Rem--5.6 AgQQS-571430-536
Rem--4.6 AgQQS-571430-470
Rem--3.6 AgQQS-571430
97--3.0 Cu-441-590
95-5.0-QQS-571450-464
1Rem-1.5 AgQQS-571588
-Rem-1.5 AgQQS-571580
-Rem-2.5 AgQQS-571579-716
100--5.5 AgQQS-571450

SOLDER

50/50 Solid Wire

SOLDER

60/40 Solid Wire

SOLDER

50/50 Rosin Core

babbitt chop bar

8 Lb Chop Bar

SOLDER

40/60 Solid Wire

SOLDER

40/60 Rosin Core

solder, lead-free

95/5 Lead Free

solder bar

1 Lb Solder Bar