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<title><![CDATA[EC21 Product Catalogs - down stress]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/down_stress--2846/1/down stress.html]]></link><item>
<title><![CDATA[material 4340 | Material 4340 Thermal Properties | China Material 4340 Steel Round Bars]]></title><link><![CDATA[https://4340steelplate.en.ec21.com/material_4340_Material_4340_Thermal--11570260_11592434.html]]></link><description><![CDATA[4340 Steel Round Bar Sheet Plate Heat Treatment and Process
Stress RelievingFor pre-hardened steel stress relieving is achieved by heating steel 4340 to between 500 to 550°C. Heat to 600 °C – 650]]></description><pubDate><![CDATA[20220624]]></pubDate></item>
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<title><![CDATA[4340 Steel | Alloy Steel 4340 Steel | Good Toughness 4340 Steel Round Bars]]></title><link><![CDATA[https://songshunsteel.en.ec21.com/4340_Steel_Alloy_Steel_4340--11800270_11800363.html]]></link><description><![CDATA[stress and phase transformation stress. If you can’t get their laws and characteristics, you can’t take the right rational processes. The consequence is that there is a risk of cracking the casti]]></description><pubDate><![CDATA[20230601]]></pubDate></item>
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<title><![CDATA[1.2162 21MnCr5 Cold Work Tool Steel]]></title><link><![CDATA[https://fushunharrislee.en.ec21.com/1.2162_21MnCr5_Cold_Work_Tool--11359578_11578108.html]]></link><description><![CDATA[stress-relieving heat treatment:
630 to 650 °C, about 2 to 4 hours with slow furnace cooling
Preheating:
350 °C depending on dimensions
Hardening:
curing temperature 810 to 840 °C in oil of ~ 60 ]]></description><pubDate><![CDATA[20220530]]></pubDate></item>

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