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So far Harris Lee has created 280 blog entries.

4140 Plasma Nitriding vs Oxynitriding: Wear and Corrosion Windows

By Harris, Technical Team, SHUNFU METAL One Grade, Four Standard Systems AISI 4140 is the world's most widely specified chromium-molybdenum alloy steel, but the same steel travels under different names in different markets: EN 42CrMo4 (1.7225) in Europe, JIS SCM440 in Japan, BS 708M40 in Britain, GOST 40KhM in Russia, and 42CrMo under the Chinese

2026-08-28T02:08:52+00:00September 2nd, 2026|Industrial Articles|
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4140 Marine Corrosion Fatigue: How Pitting Kills Bolt Life

By Harris, Technical Team, SHUNFU METAL One Grade, Four Standard Systems AISI 4140 is the world's most widely specified chromium-molybdenum alloy steel, but the same steel carries different names in different markets: EN 42CrMo4 (1.7225) in Europe, JIS SCM440 in Japan, BS 708M40 in Britain, GOST 40KhM in Russia, and 42CrMo under the Chinese standard

2026-08-28T01:57:24+00:00September 2nd, 2026|Industrial Articles|
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4140 QT Bars in Large Diameters: Crack-Free Process Windows

By Harris, Technical Team, SHUNFU METAL One Grade, Four Standard Systems AISI 4140 is the world's most widely specified chromium-molybdenum alloy steel, yet the same steel travels under different names in different markets: EN 42CrMo4 (1.7225) in Europe, JIS SCM440 in Japan, BS 708M40 in Britain, GOST 40KhM in Russia, and 42CrMo under the Chinese

2026-10-10T01:46:14+00:00September 1st, 2026|Industrial Articles|
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Yes (Cookies are small files that a site or its service provider transfers to your computers hard drive through your Web browser (if you allow) that enables the sites or service providers systems to recognize your browser and capture and remember certain information We use cookies to help us remember and process the items in your shopping cart, understand and save your preferences for future visits, keep track of advertisements and compile aggregate data about site traffic and site interaction so that we can offer better site experiences and tools in the future. We may contract with third-party service providers to assist us in better understanding our site visitors. These service providers are not permitted to use the information collected on our behalf except to help us conduct and improve our business. If you prefer, you can choose to have your computer warn you each time a cookie is being sent, or you can choose to turn off all cookies via your browser settings. Like most websites, if you turn your cookies off, some of our services may not function properly. However, you can still place orders by contacting customer service. Google Analytics We use Google Analytics on our sites for anonymous reporting of site usage and for advertising on the site. If you would like to opt-out of Google Analytics monitoring your behaviour on our sites please use this link (https://tools.google.com/dlpage/gaoptout/)

Do we disclose any information to outside parties?

We do not sell, trade, or otherwise transfer to outside parties your personally identifiable information. This does not include trusted third parties who assist us in operating our website, conducting our business, or servicing you, so long as those parties agree to keep this information confidential. We may also release your information when we believe release is appropriate to comply with the law, enforce our site policies, or protect ours or others rights, property, or safety. However, non-personally identifiable visitor information may be provided to other parties for marketing, advertising, or other uses.

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The minimum information we need to register you is your name, email address and a password. We will ask you more questions for different services, including sales promotions. Unless we say otherwise, you have to answer all the registration questions. We may also ask some other, voluntary questions during registration for certain services (for example, professional networks) so we can gain a clearer understanding of who you are. This also allows us to personalise services for you. To assist us in our marketing, in addition to the data that you provide to us if you register, we may also obtain data from trusted third parties to help us understand what you might be interested in. This ‘profiling’ information is produced from a variety of sources, including publicly available data (such as the electoral roll) or from sources such as surveys and polls where you have given your permission for your data to be shared. You can choose not to have such data shared with the Guardian from these sources by logging into your account and changing the settings in the privacy section. After you have registered, and with your permission, we may send you emails we think may interest you. Newsletters may be personalised based on what you have been reading on theguardian.com. At any time you can decide not to receive these emails and will be able to ‘unsubscribe’. Logging in using social networking credentials If you log-in to our sites using a Facebook log-in, you are granting permission to Facebook to share your user details with us. This will include your name, email address, date of birth and location which will then be used to form a Guardian identity. You can also use your picture from Facebook as part of your profile. This will also allow us and Facebook to share your, networks, user ID and any other information you choose to share according to your Facebook account settings. If you remove the Guardian app from your Facebook settings, we will no longer have access to this information. If you log-in to our sites using a Google log-in, you grant permission to Google to share your user details with us. This will include your name, email address, date of birth, sex and location which we will then use to form a Guardian identity. You may use your picture from Google as part of your profile. This also allows us to share your networks, user ID and any other information you choose to share according to your Google account settings. If you remove the Guardian from your Google settings, we will no longer have access to this information. If you log-in to our sites using a twitter log-in, we receive your avatar (the small picture that appears next to your tweets) and twitter username.

Children’s Online Privacy Protection Act Compliance

We are in compliance with the requirements of COPPA (Childrens Online Privacy Protection Act), we do not collect any information from anyone under 13 years of age. Our website, products and services are all directed to people who are at least 13 years old or older.

Updating your personal information

We offer a ‘My details’ page (also known as Dashboard), where you can update your personal information at any time, and change your marketing preferences. You can get to this page from most pages on the site – simply click on the ‘My details’ link at the top of the screen when you are signed in.

Online Privacy Policy Only

This online privacy policy applies only to information collected through our website and not to information collected offline.

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By using our site, you consent to our privacy policy.

Changes to our Privacy Policy

If we decide to change our privacy policy, we will post those changes on this page.
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