MONEL K500 FLAT WASHERS - DIN 125 / UNS N05500

Name: Ananka Group - India's Leading Fasteners Manufacturer Company
Rating: 5 (451 reviews)

■ Dimensions in mm (DIN 125 Type A)

PART NUMBER	NOMINAL SIZE	INNER DIAMETER (d1) Max	OUTER DIAMETER (d2) Max	THICKNESS (s) Max	WEIGHT (Kg / 100 pcs Approx)
AN-FW-MK500-M3	M3	3.32	7.00	0.55	0.012
AN-FW-MK500-M4	M4	4.48	9.00	0.90	0.031
AN-FW-MK500-M5	M5	5.48	10.00	1.10	0.044
AN-FW-MK500-M6	M6	6.62	12.00	1.80	0.114
AN-FW-MK500-M8	M8	8.62	16.00	1.80	0.214
AN-FW-MK500-M10	M10	10.77	20.00	2.20	0.408
AN-FW-MK500-M12	M12	13.27	24.00	2.70	0.627
AN-FW-MK500-M14	M14	15.27	28.00	2.70	0.860
AN-FW-MK500-M16	M16	17.27	30.00	3.30	1.130
AN-FW-MK500-M18	M18	19.33	34.00	3.30	1.470
AN-FW-MK500-M20	M20	21.33	37.00	3.30	1.720
AN-FW-MK500-M22	M22	23.33	39.00	3.30	1.830
AN-FW-MK500-M24	M24	25.33	44.00	4.30	3.230

Note: Contact Ananka Group for expanded heavy-duty diameters (up to M56), heavy-duty washers (DIN 9021), and spring washers (DIN 127).

■ Technical Specifications

Material	Monel K500 (Precipitation-Hardenable Nickel-Copper Alloy)
Standard / Classification	UNS N05500 \| DIN 2.4375 \| Alloy K-500 Density: 8.44 g/cm³ Melting Range: 1315 - 1350°C (2400 - 2460°F)
Mechanical Properties (Age Hardened)	Tensile Strength: ≥ 965 MPa (140 ksi) Yield Strength (0.2% Offset): ≥ 690 MPa (100 ksi) Elongation (%): ≥ 20% Hardness (Rockwell C): ≥ 24 HRC
Chemical Composition (%)	Ni (+Co): 63.0 Min \| Cu: 27.0 - 33.0 \| Al: 2.30 - 3.15 \| Ti: 0.35 - 0.85 \| Fe: 2.0 Max \| Mn: 1.5 Max \| C: 0.25 Max \| Si: 0.50 Max \| S: 0.01 Max
Manufacturing Specification	Washers are typically stamped or machined from Monel K500 plate/sheet or rod conforming to ASTM B865. Dimensional tolerances strictly follow DIN 125, DIN 9021, or ASME B18.22.1.
Types Available	Flat Washers (Form A / Form B), Spring Lock Washers, Belleville Washers, Machined Washers, and Custom Punched Washers.
Properties & Applications	Crucial for evenly distributing heavy structural loads while preventing galling in high-pressure assemblies. They provide the required severe corrosion resistance and non-magnetic properties necessary for marine hardware, offshore oil platforms, and highly stressed pump components operating in sour-gas environments.
Marking	Due to size constraints and stamping limitations on hardened materials, flat washers are generally not permanently marked unless specifically requested by the client or required by a custom specification.
Qualification & Acceptance	Independently tested for hardness, chemical analysis, pitting resistance, and supplied with EN 10204 Type 3.1 Material Test Certification.