Guotai Junan released a research report saying that under the background of carbon neutrality, the scarcity of coal mines is prominent, and the value of assets will continue to increase. The high point of capital expenditure in the coal industry appeared in 2012. Under the general direction of carbon neutrality, the overall investment in the industry has slowed down, and capital expenditure has gradually declined. From 2021 to now, the Energy Bureau of the National Development and Reform Commission has only newly approved 17.4 million tons of tungsten powder.
With metals, direct comparisons based on strength do not work. Because there is no single, universal scale of power. Four types of strength related to metallurgy will be introduced in this article.
Tensile strength is the ability of a material to resist tension. It takes into account the force required to stretch or pull something apart. Materials with low tensile strength are easier to pull apart than materials with high tensile strength.
Compressive strength is the ability of a material to withstand compression (compression). To test the compressive strength, an external force is applied to the material to track how much the material resists a reduction in size. A widely accepted test for compressive strength is the Mohs hardness test. The test uses a 1-10 or softest and hardest mineral grading scale.
Yield strength is the ability of a material to withstand permanent deformation or bending. This is a way of testing the elastic limit of a given material. This is usually determined by a bending test, in which the ends of a beam or rod are clamped and pressure applied. The aim is to discover how much stress is required to exceed the yield point of the material, or the point at which the material will not return to its original shape after the stress is removed.
Impact strength refers to the ability of a material to withstand impact without cracking or breaking. In other words, it's a way to determine the limit of the energy a material can absorb through impact.
Since the strength of a metal depends on many factors, there is no simple answer to the question "what is the strongest metal?" However, several metals are considered to be the strongest, including:
For example, compare tungsten and titanium
Tungsten is the strongest of all natural metals in terms of tensile strength (142,000 psi). But in terms of impact strength, tungsten is weak -- it's a fragile metal and is known to shatter on impact. Titanium, on the other hand, has a tensile strength of 63,000 psi. But when you calculate the density of titanium and compare it pound to pound, it's better than tungsten. In terms of compressive strength, titanium has a much lower Mohs hardness index.
Knowing which material is the strongest really depends on what you're going to do with it. In some applications, high yield strength is critical, but compressive strength is not a factor.
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China's non-manufacturing purchasing managers index for March was released by the China Federation of Logistics and Purchasing and the Service Industry Survey Center of the National Bureau of Statistics today. An index of business activity for the non-manufacturing sector as a whole fell below 50 percent.
China's non-manufacturing business activity index was 48.4%, down 3.2 percentage points from the previous month. The new orders index was 45.7 percent, down 1.9 percentage points from the previous month, indicating a significant slowdown in the growth of supply and demand in the non-manufacturing sector from the previous month. In terms of sectors, the business activity index and new order index of transportation, accommodation and catering, culture, sports and entertainment, and tourism-related industries all declined significantly from the previous month.
Then the tungsten powder of the market may be affected by significant changes, the price will also be volatile, if you want to know the latest news of the tungsten powder, welcome to contact us.
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