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LUOHAIMEI S51200 Deep Groove Year-end annual account Ball 2PCS Challenge the lowest price Bearing Stainles ABEC-1

LUOHAIMEI S51200 Deep Groove Ball Bearing (2PCS) ABEC-1 Stainles


LUOHAIMEI S51200 Deep Groove Ball Bearing (2PCS) ABEC-1 Stainles


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: S51200
Structure: Deep Groove
Material: 440C Stainless Steel ( prefix "S" )
Bore Dia (d): 10 mm
Outer Dia (D): 26 mm
Magnetic: little
Hardness: 58HRC
Corrosion Resistance: General
Clearance: C0
Grades: ABEC Grades 1
Static Load Rating (Cor) (Newtons): 9546
Dynamic Load Rating (Cr) (Newtons): 7056
Weight: 18.9 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.
The American Iron and Steel Institute classifies it as 440C martensitic standard stainless steel. Most modern knifemakers simply call it 440C.
If you have any questions, please feel free to contac

LUOHAIMEI S51200 Deep Groove Ball Bearing (2PCS) ABEC-1 Stainles

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