Platinum Wire

Platinum Wire Specifications

Outer diameter range:	0.008″ to 0.3″
Typical tolerance of the outer diameter:	±0.008″
Wall thickness range:	0.0006″ to 0.02″
Typical tolerance of the wall thickness:	±0.0002″
Length:	Up to 40″ or custom-made, cutting service provided
Typical tolerance of the length:	±0.004″

Platinum Vs. Rhodium Vs. Iridium: Key Properties Comparison

Material	Melting Point (°C)	Density (g/cm³)
Pure Platinum (Pt, 99.99%)	1772	21.45
Pure Rhodium (Rh, 99.99%)	1963	12.44
Pt-Rh 5%	1830	20.70
Pt-Rh 10%	1860	19.80
Pt-Rh 20%	1905	18.80
Pure Iridium (Ir, 99.99%)	2410	22.42
Pt-Ir 5%	1790	21.49
Pt-Ir 10%	1800	21.53
Pt-Ir 20%	1840	21.81
Pt-Ir 25%	1840	21.70
Pt-Ir 30%	1860	22.15

Platinum Wire Manufacturing Processes

After high-purity platinum is cold-rolled and pressed into sheets, it undergoes solid solution annealing. The material is then subjected to mechanical drawing, shaping, and polishing to produce platinum capillary tubes. The detailed processes are as follows:

• Raw Material Purification: High-purity platinum (typically ≥99.95%) is further refined via electrolysis or chemical methods to remove impurities.
• Melting & Casting: The platinum is melted under high temperature in an inert gas atmosphere and cast into rods or billets.
• Hot Working (Hot Rolling/Extrusion): The billet is heated to a malleable state and formed into a rough tube shape through rolling or extrusion.
• Cold Working (Cold Drawing/Rolling): The tube is gradually drawn or rolled at room temperature multiple times, with intermediate annealing to relieve work hardening, achieving precise dimensions.
• Annealing: Annealing in a controlled atmosphere or vacuum restores ductility and eliminates internal stresses.
• Precision Finishing & Surface Treatment: Polishing and ultrasonic cleaning are applied to ensure a flawless surface, critical for high-purity applications (e.g., semiconductors or medical devices).
• Quality Inspection: Spectrometry (composition check), dimensional measurement (micrometer/laser gauging), leak testing, and microstructure analysis (metallography) are conducted to verify compliance.

Platinum Wire Applications

• Scientific Experiments: Used in electrochemical experiments (e.g., as electrodes) and high-temperature tests due to their corrosion resistance and high melting point.
• Industrial Catalysis: Acts as a catalyst in chemical processes, such as ammonia oxidation for nitric acid production.
• Medical Devices: Employed in medical implants (e.g., pacemaker electrodes) or guidewires due to their biocompatibility.
• Electronics Industry: Used in high-end sensors, resistors, or connectors for its conductivity and stability.
• Thermocouples: Combined with metals like rhodium to create high-temperature thermocouples for extreme temperature measurements.

Platinum Wire Packaging

Platinum Wire is carefully placed in wooden cases or cartons with additional soft materials to support and prevent shifting during transportation. This packaging method guarantees the integrity of the products throughout the delivery process.

Wire Gauge Chart For AWG Conversion

Gauge No.	Inch	mm	Gauge No.	Inch	mm
0000	0.4600	11.684	19	0.0359	0.912
000	0.4096	10.404	20	0.0320	0.812
00	0.3648	9.266	21	0.0285	0.724
0	0.3249	8.252	22	0.0253	0.644
1	0.2893	7.348	23	0.0226	0.574
2	0.2576	6.544	24	0.0201	0.511
3	0.2294	5.827	25	0.0179	0.455
4	0.2043	5.189	26	0.0159	0.404
5	0.1819	4.621	27	0.0142	0.361
6	0.1620	4.115	28	0.0126	0.320
7	0.1443	3.665	29	0.0113	0.287
8	0.1285	3.264	30	0.0100	0.255
9	0.1144	2.906	31	0.0089	0.227
10	0.1019	2.588	32	0.0080	0.202
11	0.0907	2.305	33	0.0071	0.180
12	0.0808	2.053	34	0.0063	0.160
13	0.0720	1.828	35	0.0056	0.143
14	0.0641	1.628	36	0.0050	0.127
15	0.0571	1.450	37	0.0045	0.113
16	0.0508	1.291	38	0.0040	0.102
17	0.0453	1.150	39	0.0035	0.089
18	0.0403	1.024	40	0.0031	0.079