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Stainless on Shafting.InfoImages and videos used on the Shafting.Info site are to the best of our knowledge public domain. Anything found to be breaching copyright will be removed immediately. Articles on the Shafting.Info site remain the property of the writer/submitter and the opinions stated in these articles are not necessarily the opinions of the Shafting.Info site or its editors.
303 Stainless Steel (A1)303 is a free-machining stainless steel. The free-machining characteristics are provided by adding sulphur and/or selenium. Using 303 stainless steel can be more cost effective than using other stainless steels since 303 takes less time to machine, machine tool bits will last longer. 303 is similar to 304 grade (A2 or 18/8) but is easier to machine.304 Stainless Steel (A2, 18-8)304 stainless steel is easy to machine and very widely used. Due to the wide usage, 304 stainless steel is usually cheaper than other grades when purchased in the unmachined form. It should always be remembered though, that finished machined parts have their own input costs. It can't be assumed that two similar sized shafts will be cheaper in 304 stainless than in 316 stainless simply because the base material cost is cheaper.316 Stainless Steel (A4)316 Stainless Steel is used when the product will be exposed to a highly corrosive environment. 316 stainless steel contains molybdenum. The nickel content is 10%. Molybdenum, in conjunction with chromium, provides superior resistance to corrosion due to chlorides. 316 stainless steel is subject to attack if very high levels of chlorine are used for extended periods of time. 316 stainless steel is non-magnetic. Its machinability is similar to 304 stainless steel, and its material cost is usually much higher than 303 or 304 stainless steel. 316 steel is used in the manufacture and handling of food and pharmaceutical products where it is often required in order to Minimise metallic contamination. It is also known as "marine grade" stainless steel due to its increased resistance to chloride corrosion compared to type 304.17-4 PH Stainless SteelAlso known as 630 Stainless Steel containing 17% chromium and 4% nickel. Precipitation-hardening martensitic stainless steels have corrosion resistance comparable to austenitic varieties, but can be precipitation-hardened to even higher strengths than the other martensitic grades.400 Grades of Stainless SteelMartensitic stainless steels, with lower chromium levels, no nickel, and high carbon content, these steels may be heat-treated to have favourable characteristics of high strength and toughness. Some common 400 grades include 416 and 440C. The material is magnetic and corrosion resistance is not as great as 300 grades.416 Grade Stainless SteelA magnetic mid grade alloy used for it's strength, durability and magnetic properties. It can be hardened, and is easy to machine due to additional sulphur.440C Grade Stainless SteelContains more carbon which allows for much better edge retention when the steel is heat treated properly. It can be hardened to Rockwell 58 hardness, making it one of the hardest stainless steelsUseful information about precision ground shafting is available in the links below and to the right of this page. Where to purchase shaftingSmall Parts and BearingsMany types of stainless steel shafting for small industrial and hobby applications. Shipping daily to USA, England, Asia and most worldwide destinations. www.smallparts.com.au Miniature Bearings Australia Wholesale stainless steel shafting for small industrial and hobby applications. www.minibearings.com.au H.E. Supplies (Hobby Engineering) Stainless steel hobby shafting for all types of small dynamic hobbies including remote control cars, boats, planes, helicopters and other models. www.hobbyparts.com.au Continued below... |
Composition of Various Shafting Materials
The main component of these steels is Fe (Iron) with the addition of the elements shown in the following chart.
| Chrome Steel | ||||||||
| % Composition | C | Si | Mn | P | S | Ni | Cr | Mo |
| Grade SAE52100 (SUJ2, 100Cr6) | <0.95 ~ 1.10 | <0.15 ~ 0.35 | <0.501 | <0.026 | <0.026 | - | 1.30 ~ 1.60 | <0.081 |
| Austenitic Stainless | ||||||||
| % Composition | C | Si | Mn | P | S | Ni | Cr | Mo |
| Grade 303 (SUS303, 303S31, X8CrNiS189, 1.4305) | <0.101 | <1.001 | <2.001 | <0.046 | >0.15 | 8.00 ~ 10.00 | 17.00 ~ 19.00 | - |
| Grade 304 (SUS304, 304S16, XDCrNi189, 1.4301) | <0.081 | <1.001 | <2.001 | <0.046 | <0.031 | 8.00 ~ 10.50 | 18.00 ~ 20.00 | - |
| Grade 316 (SUS316, 306S16, X15CrNiMo1810. 1.4401) | <0.081 | <1.001 | <2.001 | <0.046 | <0.031 | 10.00 ~ 14.00 | 16.00 ~ 18.00 | 2.00 ~ 3.00 |
| Martensitic Stainless | ||||||||
| % Composition | C | Si | Mn | P | S | Ni | Cr | Mo |
| Grade 410 (SUS410, 410S21, X10Cr13, 1.4006) | <0.151 | <1.001 | <1.001 | <0.041 | <0.031 | <0.601 | 11.50 ~ 13.50 | - |
| Grade 416 (SUS416, 416S21, X12CrS13, 1.4005) | <0.151 | <1.001 | <1.251 | <0.041 | <0.031 | - | 12.00 ~ 14.00 | - |
| Grade 440C (SUS440C, AISI440C, X102CrMo17, 1.4125) | 0.95 ~ 1.2 | <1.001 | <1.001 | <0.041 | <0.031 | - | 16.00 ~ 18.00 | <0.751 |
| Ferritic Stainless | ||||||||
| % Composition | C | Si | Mn | P | S | Ni | Cr | Mo |
| Grade 430 (SUS430, 430S17, X8Cr17, 1.4016) | <0.121 | <0.751 | <1.001 | <0.041 | <0.031 | <0.601 | 16.00 ~ 18.00 | - |
- C - Carbon
- Si - Silicon
- Mn - Manganese
- P - Phosphorous
- S - Sulphur
- Ni - Nickel
- Cr - Chromium
- Mo - Molybdenum
More information on stainless shafting
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Images and videos used on the Shafting.Info site are to the best of our knowledge public domain. Anything found to be breaching copyright will be removed immediately. Articles on the Shafting.Info site remain the property of the writer/submitter and the opinions stated in these articles are not necessarily the opinions of the Shafting.Info site or its editors. A random picture related to mechanics or robotics SWITCHES 
Small Parts and Bearings Your switches source for small industrial applications. Shipping daily to USA, England, Asia and most worldwide destinations. www.smallparts.com.au H.E. Supplies (Hobby Enginering) Your switches source for hobby applications. www.hobbyparts.com.au A random picture related to mechanics or robotics ALUMINIUM SOCKET CAP SCREWS 
Small Parts and Bearings Your aluminium socket cap screws source for small industrial applications. Shipping daily to USA, England, Asia and most worldwide destinations. www.smallparts.com.au |
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shafting.info is your one stop resource for all types of information on shafting. The pages are administered by Miniature Bearings Australia and provide technical and sourcing information for all types of shafting from precision ground to semi-precision rod. Materials discussed include plastics, aluminium, chrome steel, various grades of stainless steel, silver steel and titanium.
This site is not a point of sale. It is designed to provide information only and to hopefully point you in the right direction with your shafting enquiries. This may include links to Miniature Bearings Australia or it's distributors, and it may also include links to competitors sites.
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