0.025" Wire | McMaster-Carr

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Minimum Temperature Minimum Temperature

Not Rated

	Temper Rating Temper Rating

Softened (Annealed)

Hardened

Spring

	Fabrication Fabrication

	Temper Temper

Spring

Not Rated

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59 Products

About Copper, Brass, and Bronze

About Stainless Steel

About Aluminum

View a wire gauge conversion chart.

About Tool Steel

Bend-and-Stay Multipurpose 304 Stainless Steel Wire

Bend this wire and it will stay put. Frequently used as tying wire and locking wire, 304 stainless steel is a good all-around choice for a wide range of applications.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

Round Wire—Spools, Cans, and Coils

Spool with Round Wire

Can

Heat Treatment: Annealed (Softened)
Heat Treatable: No
Tensile Strength: 75,000 psi
Specifications Met: ASTM A580

Matte
Dia.	Dia. Tolerance	Lg., ft.	Fabrication	Max. Temperature, °F	Weight, lb.	Container Type		Each
0.025"	-0.0005" to 0.0005"	145	Cold Drawn	550°	1/4	Spool	0000000	00000
0.025"	-0.0005" to 0.0005"	595	Cold Drawn	550°	1	Can	0000000	00000
0.025"	-0.0005" to 0.0005"	2,980	Cold Drawn	550°	5	Spool	0000000	00000
0.025"	-0.0005" to 0.0005"	5,960	Cold Drawn	550°	10	Spool	0000000	000000

Round Wire—1-ft. Lengths

1-ft. Length

Heat Treatment: Annealed (Softened)
Heat Treatable: No
Tensile Strength: 75,000 psi
Specifications Met: ASTM A580

					1 ft. Lg.
Dia.	Dia. Tolerance	Fabrication	Max. Temperature, °F	Pkg. Qty.		Pkg.
Matte
0.025"	-0.0005" to 0.0005"	Cold Drawn	550°	50	0000000	00000

Spring-Back Multipurpose 304 Stainless Steel Wire

This wire bounces back after bending. Often used to construct springs and wire rope, 304 stainless steel is a good all-around choice for a wide range of applications.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

Coils

Coil

Heat Treatment: Hardened
Tensile Strength: 205,000 psi
Specifications Met: ASTM A313, ASTM A555

				1/4 lb. Coil			1 lb. Coil
Dia.	Dia. Tolerance	Fabrication	Max. Temperature, °F	Lg., ft.		Each	Lg., ft.		Each
Mirror-Like
0.025"	-0.001" to 0.001"	Cold Drawn	570°	145	00000000	000000	595	00000000	000000

1-ft. Lengths

1-ft. Length

Heat Treatment: Hardened
Tensile Strength: 205,000 psi
Specifications Met: ASTM A313, ASTM A555

					1 ft. Lg.
Dia.	Dia. Tolerance	Fabrication	Max. Temperature, °F	Pkg. Qty.		Pkg.
Mirror-Like
0.025"	-0.001" to 0.001"	Cold Drawn	570°	50	00000000	00000

Bend-and-Stay Corrosion-Resistant 316 Stainless Steel Wire

Bend this wire and it will stay in place. It's widely used as tying and locking wire. Made of 316/316L stainless steel, it has less carbon than standard 316 for better weldability. The addition of molybdenum gives this material excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

Coils by Weight

Heat Treatment: Annealed (Softened)
Heat Treatable: No
Tensile Strength: 70,000 psi
Specifications Met: ASTM A580

			1/4 lb. Coil			1 lb. Coil
Dia.	Dia. Tolerance	Max. Temperature, °F	Lg., ft.		Each	Lg., ft.		Each
Mirror-Like
0.025"	-0.001" to 0.001"	400°	149	00000000	000000	596	00000000	000000

Coils by Length

Heat Treatment: Annealed (Softened)
Heat Treatable: No
Tensile Strength: 70,000 psi
Specifications Met: ASTM A580

			30 ft. Lg.
Dia.	Dia. Tolerance	Max. Temperature, °F		Each
Mirror-Like
0.025"	-0.001" to 0.001"	400°	000000000	000000

Lengths

Heat Treatment: Annealed (Softened)
Heat Treatable: No
Tensile Strength: 70,000 psi
Specifications Met: ASTM A580

				1 ft. Lg.
Dia.	Dia. Tolerance	Max. Temperature, °F	Pkg. Qty.		Pkg.
Mirror-Like
0.025"	-0.001" to 0.001"	400°	25	000000000	000000

Super-Elastic Nitinol Wire

Temper: Spring (Hardened)
Tensile Strength: 181,000 psi

Commonly used for eyeglass frames and antennas, this wire bounces back to its original shape after bending, stretching, and twisting. Nitinol is a nickel-titanium alloy.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

Coils

Coil

					30 ft. Lg.		100 ft. Lg.
Dia.	Dia. Tolerance	Container Type	Finish	Specifications Met		Each		Each
0.025"	-0.0005" to 0.0005"	Coil	Black Oxide	ASTM F2063	0000000	000000	000000	00
0.025"	-0.0004" to 0.0004"	Coil	Black Oxide	__	000000	00	0000000	0000000

2 ft. Lengths

Dia.	Dia. Tolerance	Finish	Specifications Met	Pkg. Qty.		Pkg.
0.025"	-0.0005" to 0.0005"	Black Oxide	ASTM F2063	5	0000000	000000

Shape-Memory Nitinol Wire

Temper Rating: Softened
Tensile Strength: 157,500 psi
Specifications Met: ASTM F2063

Bend this wire and it will hold its shape until you heat it. It is commonly used in automotive switches and latches. Nitinol is a nickel-titanium alloy.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

Coils

Coil

Dia.	Dia. Tolerance	Lg., ft.	Finish	Max. Temperature, °F		Each
0.025"	-0.0005" to 0.0005"	30	Black Oxide	250°	00000000	000000

2 ft. Lengths

Dia.	Dia. Tolerance	Lg., ft.	Finish	Max. Temperature, °F	Pkg. Qty.		Pkg.
0.025"	-0.0005" to 0.0005"	2	Black Oxide	250°	5	00000000	000000

Easy-to-Form Nickel Chromium Alloy

Spool

Temper Rating: Softened
Tensile Strength: 100,000 psi
Specifications Met: ASTM B267, ASTM B344

Bend this wire and it will stay in place. This nickel-chromium, often called Chromel C, provides effortless formability. Use it for heating elements, resistance windings, and hot-wire cutters.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

1/8 lb. Spool
Dia.	Dia. Tolerance	Fabrication	Max. Temperature, °F	Electrical Resistivity	Lg., ft.		Each
Mirror-Like
0.025"	-0.00125" to 0.00125"	Cold Worked	1800°	1.055 ohms/ft	69	0000000	000000
1/4 lb. Spool
Mirror-Like
0.025"	-0.00125" to 0.00125"	Cold Worked	1800°	1.055 ohms/ft	135	0000000	00000
1 lb. Spool
Mirror-Like
0.025"	-0.00125" to 0.00125"	Cold Worked	1800°	1.055 ohms/ft	555	0000000	00000

Multipurpose 400 Nickel Wire

Spool

Temper Rating: Softened (Annealed)
Tensile Strength: 70,000 psi
Specifications Met: ASTM B164

Bend this wire and it will stay in place. It is often used as safety lock wire. From marine hardware to chemical-processing equipment, 400 nickel is widely used for its strength, weldability, and formability. Comparable to Monel, this nickel-copper alloy will stand up to highly corrosive environments, such as those involving salt water, sulfuric acid, and alkalies.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

			1/4 lb. Spool			1 lb. Spool
Dia.	Dia. Tolerance	Max. Temperature, °F	Lg., ft.		Each	Lg., ft.		Each
Matte
0.025"	-0.0005" to 0.0005"	700°	130	0000000	000000	530	0000000	000000

Mirror-Like Multipurpose 110 Copper Wire

Temper Rating: Softened (Annealed)
Heat Treatable: No
Tensile Strength: 29,000 psi
Specifications Met: ASTM B3

This wire is polished to a mirror-like finish. Offering high electrical conductivity and formability, 110 copper is 99.9% pure. Also known as ETP copper, it's often used as grounding wire. It has a soft temper and will stay in place when bent.

1/4 lb. Spool
Dia.	Dia. Tolerance	Mechanical Finish	Lg., ft.		Each
0.025"	-0.0004" to 0.0004"	Polished	125	0000000	000000
1 lb. Spool
0.025"	-0.0004" to 0.0004"	Polished	500	0000000	00000
5 lb. Spool
0.025"	-0.0004" to 0.0004"	Polished	2,505	0000000	000000
15 lb. Spool
0.025"	-0.0004" to 0.0004"	Polished	7,515	0000000	000000

Tin-Coated Multipurpose 110 Copper Wire

Temper Rating: Softened (Annealed)
Heat Treatable: No
Tensile Strength: 29,000 psi
Specifications Met: ASTM B3

The tin coating provides a higher level of corrosion resistance and makes it easier to solder than Mirror-Like Multipurpose 110 Copper Wire. Offering high electrical conductivity and formability, 110 copper is 99.9% pure. Also known as ETP copper, it's often used as grounding wire. This wire has a soft temper and will stay in place when bent.

1/4 lb. Spool
Dia.	Dia. Tolerance	Lg., ft.		Each
0.025"	-0.0004" to 0.0004"	125	0000000	00000
1 lb. Spool
0.025"	-0.0004" to 0.0004"	500	0000000	00000
5 lb. Spool
0.025"	-0.0004" to 0.0004"	2,505	0000000	000000
15 lb. Spool
0.025"	-0.0004" to 0.0004"	7,515	0000000	000000

High-Temperature Nickel-Clad Copper

Spool

Temper Rating: Softened (Annealed)
Tensile Strength: 80,000 psi
Specifications Met: ASTM B355

This copper wire is clad in nickel to provide excellent corrosion resistance at temperatures up to 1200° F while maintaining high electrical conductivity. It has a soft temper and will stay in place when bent.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

				1/4 lb. Spool			1 lb. Spool
Dia.	Dia. Tolerance	Mechanical Finish	Finish Thick.	Lg., ft.		Each	Lg., ft.		Each
Mirror-Like
0.025"	-0.0003" to 0.0003"	Polished	0.00675"	130	00000000	000000	520	00000000	0000000

Ultra-Formable 260 Brass Wire

Temper Rating: Softened (Annealed)
Heat Treatable: No
Tensile Strength: 50,000 psi
Specifications Met: ASTM B134

The most formable brass we offer, 260 offers better weldability than 300 series brass but it’s not as machinable. 260 brass is sometimes called cartridge brass. This wire has a soft temper and stays in place when bent.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

			1/4 lb. Spool			1 lb. Spool
Dia.	Dia. Tolerance	Mechanical Finish	Lg., ft.		Each	Lg., ft.		Each
Mirror-Like
0.025"	-0.008" to 0.008"	Polished	130	0000000	00000	535	0000000	000000

Ultra-Strength Easy-to-Form 510 Bronze Wire

Temper Rating: Spring
Tensile Strength: 130,000 psi
Specifications Met: ASTM B159

Because 510 bronze is very strong and formable, it is the best choice for applications involving repetitive motion, such as springs, bellows, and switches.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

Mirror-Like
Dia.	Dia. Tolerance	Lg., ft.	Container Type	Container Size, lbs.	Mechanical Finish		Each
0.025"	-0.001" to 0.001"	129	Coil	1/4	Polished	0000000	000000

Easy-to-Form 1100 Aluminum Wire

Spool

1-ft. Length

Yield Strength: 3,500 psi
Hardness: Not Rated (Soft)
Temper: O (Annealed)
Fabrication: Cold Drawn
Specifications Met: ASTM B211

This wire has a soft temper and will stay in place when bent. Use it as tie wire and for bundling. Because 1100 aluminum is 99% pure, it offers superior formability, corrosion resistance, and electrical conductivity.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

Dia.	Dia. Tolerance	Lg., ft.	Heat Treatment	Max. Temperature, °F	Tensile Strength, psi	Weight, lb.	Container Type		Each
0.025"	-0.001" to 0.001"	430	Annealed (Softened)	200°	11,000	1/4	Spool	0000000	000000
0.025"	-0.001" to 0.001"	1,720	Annealed (Softened)	200°	11,000	1	Spool	0000000	00000
0.025"	-0.001" to 0.001"	8,605	Annealed (Softened)	200°	11,000	5	Spool	0000000	000000

						1 ft. Lg.
Dia.	Dia. Tolerance	Heat Treatment	Max. Temperature, °F	Tensile Strength, psi	Pkg. Qty.		Pkg.
0.025"	-0.001" to 0.001"	Annealed (Softened)	200°	11,000	25	0000000	000000

Hardened Undersized High-Speed M2 Tool Steel Rods

Yield Strength: Not Rated
Hardness: Rockwell C60 (Very Hard)

These rods, also known as drill blanks, have an undersized diameter for machining your own jobbers'-length drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

Dia.	Dia. Tolerance	Drill Bit Size	Lg.	Mechanical Finish	Straightness Tolerance		Each
0.025"	-0.0002" to 0"	72	1 1/8"	Precision Ground	0.012" per ft.	00000000	00000

Hardened Oversized High-Speed M2 Tool Steel Rods

Yield Strength: Not Rated
Hardness: Rockwell C60 (Very Hard)

Also known as reamer blanks, these rods have an oversized diameter that allows for finishing to your exact requirements. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

Dia.	Dia. Tolerance	Reamer Size	Lg.	Lg. Tolerance	Mechanical Finish	Straightness Tolerance		Each
0.025"	0" to 0.0002"	72	1 1/8"	-1/32" to 1/32"	Precision Ground	0.012" per ft.	00000000	00000

Corrosion-Resistant Tungsten Wire

Coil

Temper: Spring (Hardened)
Tensile Strength: Not Rated
Specifications Met: ASTM F288

This wire will spring back after bending. It's often used in heating and electrical applications. The addition of copper and nickel makes this tungsten more corrosion resistant than tungsten carbide.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

				1/16 lb.			1/8 lb.
Dia.	Dia. Tolerance	Max. Temperature, °F	Container Type	Lg., ft.		Each	Lg., ft.		Each
Matte
0.025"	-0.00038" to 0.00038"	5000°	Coil	15	0000000	000000	30	0000000	0000000

Ultra-Corrosion-Resistant Grade 2 Titanium Wire

Temper Rating: Softened (Annealed)
Tensile Strength: 50,000 psi
Specifications Met: ASTM B863

Bend this wire and it will stay in place. Because Grade 2 titanium is 99% pure, it is more corrosion resistant than Grades 5 and 9 but not as strong. It has good formability and weldability. Common uses include chemical-processing equipment, heat exchangers, and marine hardware.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

			1/8 lb. Coil			1/4 lb. Coil
Dia.	Dia. Tolerance	Max. Temperature, °F	Lg., ft.		Each	Lg., ft.		Each
Matte
0.025"	-0.003" to 0.003"	500°	130	00000000	000000	260	00000000	0000000

Gold Wire

Hardness: Rockwell B57 (Soft)

Used to make electrical connectors that are exposed to air and corrosive conditions, this 99.99% pure gold wire stays highly conductive where other conductors would fail. It also has a high melting point, low thermal resistance, and won’t oxidize, so it’s good for making parts that remain accurate in extreme environments. Compared to platinum, gold is more conductive but has a lower melting point. It’s often used to make O-rings, even for high-vacuum applications, because it’s soft enough to form a good seal when pressed between two flanges, yet won’t damage the flanges so you can reuse them.

Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.

Diameter	Diameter Tolerance	Length, ft.	Container Type	Melting Point Temperature, °F		Each
0.025"	-0.00075" to 0.00075"	1	Spool	1945°	00000000	0000000
0.025"	-0.00075" to 0.00075"	5	Spool	1945°	00000000	00000000

MIG Welding Wire for Stainless Steel

ER308L wire is for 304 and 304L stainless steel.

ER309L and E309L-T1 wire is for 309 stainless steel.

ER316L and E316L-T1 wire is for 316 stainless steel.

ER308L

2 lbs.
Dia.	Wire Type	Welding Current Designation	Shielding Gas Required	Shielding Gas Included	Approximate Lg. per Pound, ft.	Spool Dia.	Arbor Hole Size		Each
0.025"	Solid	DCEP	Yes	No	600	4"	0.63"	00000000	000000
10 lbs.
0.025"	Solid	DCEP	Yes	No	600	8"	2"	00000000	000000

ER309L

						10 lbs.
Dia.	Wire Type	Welding Current Designation	Shielding Gas Required	Shielding Gas Included	Approximate Lg. per Pound, ft.	Spool Dia.	Arbor Hole Size		Each
0.025"	Solid	DCEP	Yes	No	600	8"	2"	00000000	0000000

ER316L

2 lbs.
Dia.	Wire Type	Welding Current Designation	Shielding Gas Required	Shielding Gas Included	Approximate Lg. per Pound, ft.	Spool Dia.	Arbor Hole Size		Each
0.025"	Solid	DCEP	Yes	No	600	4"	0.63"	00000000	000000
10 lbs.
0.025"	Solid	DCEP	Yes	No	600	8"	2"	00000000	000000

Rosin Flux-Core Solder for Electronics and Electrical Applications

Rosin flux is quick acting with strong cleaning action, but leaves residue that requires flux remover. This solder is electrically conductive.

Material Composition
Tin	Lead	Silver	Melting Temperature, ° F	Dia.	Wt.		Each
For Joining Brass, Bronze, Copper, Nickel Alloys
62%	36%	2%	360°	0.025"	1 lbs.	00000000	0000000
For Joining Brass, Bronze, Copper, Nickel Alloys, Stainless Steel, Steel
60%	40%	__	370°	0.025"	1 lbs.	0000000	00000
63%	37%	__	360°	0.025"	1 lbs.	0000000	00000

Fast-Flowing Rosin Flux-Core Solder for Electronics and Electrical Applications

The five flux cores allow fast soldering that uses less solder and transmits less heat to the joint. Rosin flux is quick acting with strong cleaning action but leaves residue that requires flux remover. This solder is electrically conductive.

Material Composition
Tin	Lead	Silver	Melting Temperature, ° F	Dia.	Wt.		Each
For Joining Brass, Bronze, Copper, Nickel Alloys, Stainless Steel, Steel
60%	40%	__	375°	0.025"	1 lbs.	000000	000000
62%	36%	2%	370°	0.025"	1 lbs.	0000000	000000
63%	37%	__	360°	0.025"	1 lbs.	000000	00000

Solder for Electronics and Electrical Applications

This solder is electrically conductive. It does not have a flux core, so you can choose the flux that works best for your application.

Material Composition				1 lbs.
Tin	Lead	Melting Temperature, ° F	Dia.		Each
For Joining Brass, Bronze, Copper, Nickel Alloys, Stainless Steel, Steel
60%	40%	375°	0.025"	0000000	000000