$40 Majhengg S51206 Deep Groove Ball Bearing 305216 mm (2PCS) ABEC-1 Industrial Scientific Power Transmission Products Bearings Majhengg S51206 Deep Groove Ball Ranking TOP14 mm 2PCS 305216 ABEC-1 Bearing 360.aforativemedia.com,Ball,305216,Groove,S51206,(2PCS),Deep,mm,$40,Industrial Scientific , Power Transmission Products , Bearings,ABEC-1,/kemperyman866293.html,Majhengg,Bearing Majhengg S51206 Deep Groove Ball Ranking TOP14 mm 2PCS 305216 ABEC-1 Bearing 360.aforativemedia.com,Ball,305216,Groove,S51206,(2PCS),Deep,mm,$40,Industrial Scientific , Power Transmission Products , Bearings,ABEC-1,/kemperyman866293.html,Majhengg,Bearing $40 Majhengg S51206 Deep Groove Ball Bearing 305216 mm (2PCS) ABEC-1 Industrial Scientific Power Transmission Products Bearings

Majhengg S51206 Deep Groove Ball Ranking Ranking integrated 1st place TOP14 mm 2PCS 305216 ABEC-1 Bearing

Majhengg S51206 Deep Groove Ball Bearing 305216 mm (2PCS) ABEC-1


Majhengg S51206 Deep Groove Ball Bearing 305216 mm (2PCS) ABEC-1


Product description


Good corrosion resistance to water and many weak chemicals
Corrosion resistance can be improved by passivation
Good for temperatures up to 300°C

Slightly softer than chrome steel so lower load ratings
Will corrode in salt water or salt spray and poor resistance to acids/alkalis
More expensive than chrome steel


Item: S51206
Structure: Deep Groove
Material: 440C Stainless Steel ( prefix "S" )
Bore Dia (d): 30 mm
Outer Dia (D): 52 mm
Magnetic: little
Hardness: 58HRC
Corrosion Resistance: General
Clearance: C0
Grades: ABEC Grades 1
Static Load Rating (Cor) (Newtons): 30408
Dynamic Load Rating (Cr) (Newtons): 15736
Weight: 100.8 g
Quantity: 1 Lot = 2 PCS

What is 440C?

A martensitic stainless steel. It's composed of these major alloy elements (I don't list the minor elements since they don't play a major role):
Carbon: 0.95-1.25% This increases hardenability and wear resistance, but decreases toughness in higher amounts.
Manganese: 45% This is added to reduce brittleness and improve forgeability, hardenability, and reducing deformation.
Silicon: 30% This is a deoxidizer and improves hot-forming properties.
Chromium: 17.00-18.00% Added only to high alloy tool steels, this improves hardenability, high wear resistance, toughness, and corrosion resistance.
Molybdenum: 50% Improves deep hardening and toughness.

These basic elements (along with iron) are a simple combination that works well together, and has for many decades.
This alloy is technically classified as UNS (Unified Numbering System) S44044. It's also classified as SAE (Society for Automotive Engineers) as 51440C."br"The American Iron and Steel Institute classifies it as 440C martensitic standard stainless steel. Most modern knifemakers simply call it 440C.

Majhengg S51206 Deep Groove Ball Bearing 305216 mm (2PCS) ABEC-1

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United Archives / Walter Rudolph

United Archives / Walter Rudolph

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