Category: ‘Steel’
High-alloy cast irons are an important group of materials whose production should be considered separately from that of the ordinary types of cast irons. In these cast iron alloys, alloy content is well above 4% and, consequently... Read More...
I used to wonder why 4130 steel tubing was ubiquitous in welded steel tube fuselages and other airplane parts. What with a lot of talk on the Bearhawk e-mail about welding, whether to stress relieving or not, etc, I decided to lo... Read More...
AISI 4130, a chromium-molybdenum alloy used widely as an aircraft steel, combines weldability, ease of fabrication and mild hardenability. Best used for welded tube fuselages. It can also be used to make car connecting rods, engi... Read More...
According to statistics, the social stock of steel from March 5 the highest level of 18.58 million tons fell to 14.78 million tons (25 September 2010), Holidays effect of making stocks showed recent signs of modest growth, but th... Read More...
Studies of the basic structural changes that occur when a metal is subjected to cyclic stress have found it convenient to divide the fatigue process into the following stages:
Crack initiation includes the early development of f... Read More...
To make Arches from any width of steel strip to any length and curve required is done by fixing out Flexi Wall Spinal Track to the edges of each side of the galvanised 20 gauge steel strip or you can make barrel arches of any wid... Read More...
Beside national organizations, the International Standards Organization (ISO) also issues filler metal specifications. Many of the less industrialized nations utilize specifications of the industrialized countries or ISO standard... Read More...
Principles for the global
Speaking from the content, the company's information technology coverage is very broad, involving many professionals and application software systems using more species, but also require the seamless i... Read More...
Cold rolled steel provide excellent press formability, surface finish, and thickness and flatness tolerances. Steel companies manufacture three groups of low- or ultra-low-carbon grades to meet a variety of customer formability r... Read More...
Most steels used throughout Europe are specified to comply with the European standard EN 10025. However, many national standards also remain in force.
Typical grades are described as 'S275J2' or 'S355K2W'. In these examples, ... Read More...
Grade
Position of samples1)
Min. total elongation [%]
L0 = 80 mm
L0 = 5,65 √S0
1,5 < e2) ≤ 2
2 < e2) ≤ 2,5
2,5 < e2) < 3
3 ≤ e2) ≤ 25
S235JR
l/t
19/17
20/18
21/... Read More...
Grade
Yield strength
Tensile strength
Min. notch impact energy2)
Temperature
MPa
MPa
J
°C
e3) ≤ 16
e3) > 16
e3) < 3
e3) ≥ 3
S235JR
≥ 235
≥ 225
360 - 510
360 - 510
2... Read More...
Chemical composition in percent by weight [%] (Heat analysis)
Grade
C
Si
Mn
P
S
N 1)
CE 2)
max.
max.
max.
max.
max.
max.
max.
S235JR
0,17
-
1,40
0,035
0,035
0,012
0,35
S235J0
0,17
-
... Read More...
Europe
Material no.
D
F
I
GB
E
USA
J
FK1)
EN
10025-2
DIN
17100
NFA
35-501
UNI
7070
BS
4360
UNE
36 080
ASTM
JIS G
3101
S235JR
1.0038
St 37-2
E 24-2
Fe 360 B
-
AE 235 B
... Read More...
These general structural steel grades are characterised by a minimum yield strength of 185 - 360 MPa. Suitability for cold forming such as bending, folding, bordering and flanging etc. can be ordered separately. The user of these... Read More...
They contain over 5 % of alloying elements. Medium alloy steel with 2.5-6.0% of alloying elements.
Medium alloy Structural Steels:
They contain over 5 % of alloying elements.
High alloy Structural Steels:
They contai... Read More...
These steels are used for parts manufactured for application involving dynamic loading where hardenability, ductility, and fatigue strength are important. Since most structures are not heat treated, there is no need for hardenabi... Read More...
Structural steels are divided into three groups.
Low alloy Structural Steels:
Medium alloy Structural Steels:
High alloy Structural Steels:
Alloy structural steels have better mechanical properties than carbon steels... Read More...
High strength low alloy (HSLA) steels are a group of low carbon steels that utilise small amounts of alloying elements to attain yield strengths in excess of 550 MPa in the as-rolled or normalised conditions. These steels have ... Read More...
Maraging steels are a class of high-strength steel with a low carbon content and the use of substitutional (as opposed to interstitial) elements to produce hardening from formation of nickel martensites. The name maraging has ... Read More...