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Materials

Lock Washers

A CHANNOV technical table titled "List of applications where disc springs are commonly used." The table classifies materials into groups: Quality Steel, Refined Steel, Corrosion Resistant Steel, Heat Resistant Steel, Copper Alloys, and Nickel & Cobalt Alloys. For each material designation (e.g., C60, 50CrV4, Inconel X 750), it provides the W.-No., standard (DIN, BS, SEW, AISI), operating temperature range in Celsius, Modulus of Elasticity in N/Sq mm, and typical applications such as General Engineering, Oil Industry, Heat Exchangers, and Electrical applications

ALT: A technical specification table titled "Tightening couples screw - washer" in conformity with UNI 3740-ISO 898 for thick pitch bolts. The table lists bolt sizes from M4 to M42, providing Preload in Newtons (N) and Tightening Couples in Newton-meters (Nm) for two material grades: 8.8 (8G) and 10.9 (10K). Values increase with screw size, ranging from M4 (3.07 Nm at 8.8 grade) up to M42 (5628 Nm at 10.9 grade).

 

ALT: A technical matrix from CHANNOV titled "Materials and Surface Finishes for Fasteners & Washers." It lists product types like Wedge lock washers, DIN standards (DIN6796, DIN2093, DIN9250, DIN471, DIN472, DIN6799), and Satrlock. The table cross-references these with raw materials—carbon steels (65Mn, S60C, SK5, 60Si2Mn, 51CrV4) and stainless steels (SS304, SS316, A2, A4, SS420)—and finishes including Plated Zinc, Black, Dacromet, Geomet, Polishing, Mechanical Galvanizing, and Phosphating.

A detailed technical table titled "Chemical analysis of raw material" by CHANNOV. It provides the elemental composition (C, Si, Mn, P, S, Sn, Cr, Ni, Mo, and others) for various materials including Carbon Steels (C60, 38S17), Alloy Steels (51 CrV4, 27MnCrB5-2), Stainless Steels (AISI 304, 316L, 254 SMO, 316, 420), Iron grades (DC01, FE 50), Bronze, Inconel 718, Aluminum, Brass, and Copper. Each material is listed with its corresponding international standard reference such as DIN, EN, or UNI

A comprehensive conversion table titled "Conversion Hrc-Hv-Hrb-N/mm2 - Kg/mm2" by CHANNOV. The table provides equivalent values across five different scales: Tensile Strength in Newtons per square millimeter (N/mm²) and Kilograms-force per square millimeter (Kgf/mm²), and Hardness scales for Vickers (HV), Rockwell C (HRC), and Rockwell B (HRB). The data is presented in two main blocks, covering a range from 255 N/mm² (80 HV) up to 2180 N/mm² (650 HV / 57.8 HRC).

A technical data table titled "Tightening couples screw - washer" specifying bolt range standards in conformity with UNI 3740-ISO 898 for thick pitch bolts. The table lists screw sizes from M4 to M42. For each size, it provides Preload in Newtons (N) and Tightening Couples in Newton-meters (Nm) for two material grades: 8.8 (8G) and 10.9 (10K). Values range from M4 (3.07 Nm for grade 8.8) up to M42 (5628 Nm for grade 10.9)

Click to Download: Wedge Lock Washers & Industrial Spring Washers Technical Data Sheet (PDF)

 

Lock Washers & Fasteners Q&A Summary

Q: What material options are available for Wedge Lock Washers to ensure high-strength performance?

A: CHANNOV offers two primary material categories for Wedge Lock Washers: carbon/alloy steel options such as 65Mn, S60C, SK5, 60Si2Mn, and 51CrV4,

as well as stainless steel options including SS304, SS316, A2, A4, and Super Stainless Steel.

Q: Which surface treatment provides the highest corrosion resistance for steel DIN9250 washers?

A: While standard options like Plated Zinc and Black Oxide are available, Geomet® 500 Grade B offers the most robust protection, providing up to 1000 hours

of red corrosion resistance. This is significantly higher than white mechanical zinc plating, which typically offers 168 to 288 hours of resistance depending on the coating thickness.

Q: How do the finishing requirements differ between carbon steel and stainless steel DIN471 retaining rings?

A: Carbon steel DIN471 rings are typically finished with Plated Zinc, Black Oxide, Mechanical Galvanizing, or Phosphating to prevent rust.

In contrast, stainless steel versions (SS304, SS316, SS420) usually undergo Polishing to maintain their natural corrosion resistance and provide a clean aesthetic finish.

Q: What is the benefit of using Geomet® or Delta Protekt® coatings over traditional zinc plating for industrial fasteners?

A: Advanced coatings like Geomet® 321 and Delta Protekt® KL100 provide superior red corrosion resistance, ranging from 600 to 1000 hours,

whereas standard white electrolytical zinc plating may only offer 12 to 96 hours of protection. These high-performance finishes also offer a gray satin aspect,

which is preferred for heavy-duty industrial environments.

Q: Which materials are used for specialized spring components like DIN6796 and DIN2093?

A: These high-performance washers and disc springs are manufactured using specialized spring steels such as 60Si2Mn and 51CrV4,

or stainless steel variants like SS304 and SS316 to ensure consistent tension and durability under load.

 

 

CHANNOV AUTO PARTS is a leading manufacturer in the production Oilless Bush, Marginal Lubricating Bush, Bimetal bushing, Bronze Bush, Solid Lubricant Embedded Bush,

Cast bronze bearing, Teflon bushing, FR bearing, Door hinge bushing. If you want to know more about material or get a free inquiry, please contact us: [email protected] ,

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