The relationship between mechanical strength of graphite electrode and temperature

Jan. 05, 2022

From room temperature to 2500℃, the mechanical strength of graphite electrode increases with the increase of temperature. At 2500°C, the mechanical strength is about 1-2 times that of room temperature.


The relationship between mechanical strength of graphite electrode and temperature


The reason why the mechanical strength of graphite products increases with the increase of temperature can be explained as follows: 1. Graphite products do not produce local plastic deformation at low temperature, so even if a lower load is applied, it will cause stress concentration fracture.

However, when the temperature increases to a certain degree, due to the emergence of plastic state, local deformation is produced near the stress concentration point and stress is dispersed, so even if a larger load is applied, it will not cause fracture.

2. Due to the large coefficient of linear expansion of graphite crystals, anisotropy, after cooling at high temperature, the internal grain will generate a large stress, due to the value of internal stress superimposed by external forces, the strength of graphite at low temperature is low, but after heating to a certain temperature internal stress gradually reduced, so the mechanical strength increases with the temperature.


SINOMETAL is one of the leading group of companies in China that manufactures and operates carbon metallurgical material products and provides quick quotations, reliable quality, competitively priced products and prompt delivery services according to industry standards and customer requirements. To play a greater role in the entire production and supply chain, we work closely with our customers.

With years of experience and expertise in the graphite electrode industry, we are committed to developing and delivering a range of high quality, innovative and cost effective solutions.

We have a great advantage in the production of graphite electrodes. Interested partners are welcome to contact us at any time.


Contact Us

Tel:: +86 186 4091 3888

Fax: +86 411 3962 5877

Mobile: +86 186 4091 3888

E-mail: jack@sinometalunion.com

Skype: graphite.sinometal@outlook.com

QQ: 695993847

Address: No.3, Lanfeng Lane, Shahekou District, Dalian, 116001

Follow Us

Copyright © SINOMETAL MACHINERY CORP. All Rights Reserved | Sitemap