Carpenter 20 / 20Cb - 3 Alloy 20 Spring Washer DIN127 GB93 UNI1751 M6 - M100 Size

Carpenter 20/20Cb-3 Alloy 20 spring washer DIN127 GB93 UNI1751

1. The definition for Alloy 20 spring washer

Spring washers, which have axial flexibility and are used to prevent fastening or loosening due to vibrations. Locking washers, which prevent fastening or loosening by preventing unscrewing rotation of the fastening device; locking washers are usually also spring washers.

In theory split washers (aka lock washers or helical spring washers) are supposed to work by squishing flat between the nut and the mounting surface when you tighten them. At this point the sharp edges of the washer are supposed to dig into the nut and mounting surface to prevent counter-clockwise rotation

2. Alloy 20 Chemistry & Specifications

Also known as Carpenter 20 and 20CB-3, Alloy 20 flanges offer users a combination of nickel, chromium, molybdenum, and copper which provides good general corrosion resistance. Alloy 20 flanges are best suited for mid-range corrosion use – better than steel alloys but not at the level of high performance nickel based alloys like Hastelloy C276. Alloy 20 is a nickel alloy that was specifically designed to withstand the harsh environment of hot sulfuric acid but also performs well in a variety of other acids. Alloy 20 flanges are an ideal choice when you don’t need the corrosion resistance power and price-tag of high performance nickel alloys like Hastelloy C276; but you need something that will give you more protection than 316 stainless steel or even a Super Duplex 2507 stainless steel.

Alloy 20 Specifications: UNS N08020, ASME SA240, , ASME SB366, ASME SB462, ASME SB463, ASME SB464, ASME SB473, ASME SB729, ASTM A240, ASTM B366, ASTM B463, ASTM B464, ASTM B473, ASTM B729, ASTM BB462, ANSI/ASTM A555-79, EN 2.4660, , Werkstoff 2.4660, CN7M, DIN 2.4660

Mechanical Properties
• Ultimate tensile strength: 80 ksi
• Yield strength: 35 ksi
• Density: 0.292 lb/in.3
• Electrical Resistivity (RT) 651 ohm-cir mil/ft
• Elongation: 30%

2. Alloy 20 spring washer dimension

3. The difference between DIN127 A and B for Alloy 20 spring washer

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