Introduction for POM Duracon M90-44

1. What is Duracon M90-44?

Duracon M90-44 POM

Duracon M90-44 is a standard-grade polyoxymethylene (POM) resin for injection molding manufactured by Polyplastics Co., Ltd., also known as "POM material." This material is produced using a copolymer processing method (POM-C), which offers more convenient processing conditions and a wider processing temperature range compared to the Delrin POM-H homopolymer processing method. The material combines the mechanical strength, wear resistance, and dimensional stability typical of engineering plastics.

Due to its outstanding performance, Duracon M90-44 POM resin is often used in the manufacturing of precision parts, particularly in applications such as gears, bearings, and valves that have stringent requirements for wear resistance and lubrication.

According to the Technical Data Sheet (TDS) provided by Polyplastics, Duracon has a melt flow index (MFR) of 9 g/cm³ at 190°C and 2.16 kg. Its performance is similar to that of Hostaform C9021, making it a suitable substitute.

2.Key properties of Duracon M90-44

• Easy to process, Duracon M90-44 has an MVR of 9 g/10 min, which indicates medium viscosity. It is suitable for the vast majority of injection molding machines and has relatively broad processing requirements.
• Good wear resistance. According to Polylastics’ technical data sheet, the dynamic friction coefficient of Duracon M90-44 versus carbon steel at 0.49 MPa and 0.3 m/s is only 0.46, which is significantly lower than that of conventional plastic materials.
• High strength and rigidity. Duracon M90-44 has a tensile modulus of 2.7 GPa and a flexural modulus of 2.5 GPa, enabling it to maintain good dimensional stability and mechanical strength even under high loads.

Duracon M90-44 POM
Product information
Color					·Black ·Natural color
Flame retardant					HB
Process					Injection molding
Polymer					Copolymer
Viscosity					Medium viscosity
Additives					·Lubricant ·Mold release
Physical properties				Standard	Value		Unit
Density				ISO 1183	1.41		g/cm³
Shrinkage flow 60*60*2 mm				ISO 294	2.0		%
Shrinkage xflow 60*60*2 mm				ISO 294	2.0		%
Water absorption 23℃ 24hr 1.0 mm				ISO 62	0.5		%
Melt flow rate (MFR), 190℃ 2.16 kg				ISO 1133	9		g/10min
Melt volume rate (MVR), 190℃ 2.16 kg				ISO 1133	8		cm³/10min
Mechanical behavior				Standard	Value		Unit
Tensile modulus				ISO 527	2700		MPa
Tensile Strength				ISO 527	62		MPa
Elongation break				ISO 527	35		%
Flexural Strength				ISO 178	87		MPa
Flexural Modulus				ISO 178	2500		MPa
Charpy Notch Impact 23℃ 1eA				ISO 179	6.0		kJ/m²
Friction coefficient dynamic VS C-Steel 0.49 MPa 0.3m/s thrust				JIS K7218	0.46
Friction coefficient dynamic VS C-Steel 0.98 MPa 0.3m/s thrust				JIS K7218	0.40
Friction coefficient dynamic VS M90-44 0.06 MPa 0.15m/s thrust				JIS K7218	0.37
Specific wear rate VS C-Stell 0.3m/s 0.49 MPa material side thrust				JIS K7218	0.00065		mm³/(N·km)
Specific wear rate VS C-Stell 0.3m/s 0.49 MPa steel side thrust				JIS K7218	0.00001		mm³/(N·km)
Specific wear rate VS C-Stell 0.3m/s 0.98 MPa material side thrust				JIS K7218	0.0003		mm³/(N·km)
Specific wear rate VS C-Stell 0.3m/s 0.98 MPa steel side thrust				JIS K7218	0.00001		mm³/(N·km)

To learn more about Duracon POM M90-44, please click here 👉 Duracon M90-44 technical data sheet 

3. Duracon M90-44 VS Hostaform C 9021

As two commonly used POM-C materials, Duracon M90-44 and Hostaform C 9021 are extremely similar in terms of technical performance. If you are considering switching materials, you might want to try

	Duracon M90-44 POM-C	Hostaform C 9021 POM-C	Unit
Density	1.41	1.41	g/cm³
MVR	8	8	cm³/10min
Tensile strength, yield	62	64	MPa
Tensile modulus	2700	2850	MPa
Flexural modulus	2500	2700	MPa
Charpy notched impact, 23℃	6.0	6.5	kJ/㎡
Heat deflection temperature, 1.8 MPa	95	104	℃
Mold shrinkage	2.3/2.1	2.0/1.8	%

Although Hostaform C 9021 performs slightly better than Duracon M90-44 in terms of technical specifications, Duracon M90-44 is more widely used in practice. This is primarily because its technical specifications meet standard application requirements, and it offers a significant price advantage over Hostaform C 9021, making it more widely used in East Asia and Southeast Asia.

4.  Applications of Duracon M90-44

Duracon M90-44 POM, with its excellent lubricity, wear resistance, and high strength, is commonly used in general applications such as gears, valves, bearings, pulleys, and bushings.

Duracon M90-44 POM is also widely used in automotive applications, such as door lock assemblies, rearview mirror components, windshield wiper components, seat belt buckles, and seat adjustment pulleys.