Friday, April 25, 2014

SS 416

Stainless Steel Type416 is a chromium grade of stainless steel. It is similar to type 410 but it differs by the addition of phosphorus and sulfur to produce free machining Steel. This modification helps makes it one of the most readily machinable stainless steel. Like other stainless steels types it is resistant to atmosphere, food acids, and neutral basic salts. Conventional heat treating methods produces a variety of mechanical properties in Type 416. Type 416 has a tensile strength of 85,000-120,000 psi. The steel is magnetic in all conditions, excellent machining characteristics and poor welding properties and meets the aircraft industry standards. Typically it is used where type 410 is need but with the addition of free machining properties.

General Chemical Analysis
C
Mn
P
S
Si
Cr
Ni
Mo
Cu
.15 Max
1.25 Max
.060 Max
.15-.40
1.00 Max
12.00-13.50
.75 Max
.60 Max
.50 Max

Tuesday, April 15, 2014

Green Steel

The steel industry is constantly changing and renovating to create a sustainable “green” future and is dedicated to promote economic growth and environmental responsibility.

-Steel is used in delivering renewable energy (solar, wind, tidal)

-All steel made within the last 150 years is recyclable

-Since the 1940’s, the North American steel industry has reduced its energy intensity by 60%

-The industry has 90% reduction in air and water discharge in the last 10 years

-Water being recycled back into rivers and other sources are often cleaner than when extracted

- Over 67% of all steel is recycled in North America each year (that’s more than paper, aluminum, plastic and glass combined)


-Vehicle structures using Advanced High Strength Steel (AHSS) weigh up to 35% less than those made with conventional steel, thus significantly reducing greenhouse-gas emissions

Thursday, April 10, 2014

4140 Quenched and Tempered

4140 is a chromium and molybdenum alloy steel that has an excellent weight to strength ratio. It is considerably stronger than standard steel. Although it is chromium steel and often referred to as "chromoly steel", it does not contain as much chromium as stainless steel. Therefore the corrosion resistant is improved compared to standard steel but not to the same degree as stainless steels. The purpose of the molybdenum is to add uniformity of hardness and strength to this alloy. 4140 responds readily to heat treatment and is relatively easy to machine in the heat treated condition. It has a tensile strength of 150,000 psi, yield strength of 130,000 psi and approximately 35-45% elongation. This metal is typically used for bolts couplings, axle shafts, piston rods, tractor arms, clutch and flywheel components, sprockets, ect.