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Precision tube specification
Precision tube specification
Source: youtube2d.com Release date: 2017 / 11 / 7 13:27:34 Number of hits:

product Specifications texture of material Place of Origin
Precision tube product 38*1.0 No.20 Shandong
Precision tube 5*0.8 No.20 Shandong
Precision tube 38*0.8 No.20 Shandong
Precision tube 42*3.5 No.20 Shandong
Precision tube 89*6 No.20 Shandong
Precision tube 34*4 No.20 Shandong
Precision tube 76*4.5 No.20 Shandong

????? The alloy elements in precision tube have great influence on the low temperature temper brittleness. Chromium and manganese promote the segregation of impurity elements such as phosphorus at the austenite grain boundary, thus promoting the low temperature tempering brittleness. Tungsten and vanadium have no effect on it. Molybdenum reduces the ductile brittle transition temperature of low-temperature tempered precision tube, but it is not enough to restrain the low-temperature temper brittleness. Silicon can delay the precipitation of cementite during tempering and increase its formation temperature, so it can increase the temperature of brittleness of precision tube during low temperature tempering.

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