Silicon-killed steels

The conditions which affect the type of reaction are bath temperature and the composition of iron or steel which is being coated. At 480-520°C the reaction between iron and zinc can be linear with time so that the thickness of the alloy layers will increase in direct proportion to the immersion time and the reaction will continue to be relatively rapid. With some steels (e.g. some silicon-killed steels), the reaction can be linear at the normal galvanising temperature of about 450 C. 

Steel 202 was treated with rare earth metals to modify the sulphide inclusions. The manganese and silicon concentrations are typical for silicon killed steels. 

Silicon-killed steel, aluminuni-killed steel, or steel killed by any deoxidizing agent, specified or implied 0.65 per 100 lb... 

Low-carbon plate and sheet are made in three qualities fully killed with silicon and aluminum, semikiUed (or balanced), and rimmed steel. Fully killed steels are used for pressure vessels. Most general-purpose structural mild steels are semikiUed steels. Rimming steels have minimum amounts of deoxidation and are used mainly as thin sheet for consumer applications. 

The new continuous casting processes, in contrast to ingot cast products, provide tin mill products which are exceptionally clean and formable. The deoxidizing processes required for continuous casting involve either aluminum or silicon killing, which adds aluminum or silicon to the steel. Experience with type D steels indicates that the added aluminum will not cause a corrosion problem. Laubscher and Weyandt (18) have shown that the silicon found in silicon killed, continuous cast, heavily coated ETP will not adversely affect the corrosion performance of plain cans packed with mildly acid food products in which tin usually protects steel. The data on enameled cans is not definitive. Additional published data are required to determine whether or not silicon actually reduces the performance of enameled cans made from enameled, heavily coated, silicon killed, continuous cast ETP. 

Aluminum iodide pentadecahydrate, 2 386 Aluminum-iron alloys, 2 308-309 Aluminum-iron-silicon alloys, 2 316-317 a-Aluminum-iron-silicon alloys, 2 317 intermetallic phases, 2 316t P-Aluminum-iron-silicon alloys, 2 317 intermetallic phases, 2 316t Aluminum-killed steel, continuous-cast,... 

Silicon hydrides, in growing amorphous silicon, 22 129-131 Silicon integrated circuits, 19 167 Siliconized coatings, 10 108 Silicon-killed free-machining steels, 24 424 Silicon lattice, 23 35 Silicon-manganese-zirconium, 26 638 Silicon microelectronics, sensor sensitivity and, 22 269... 

Above 75Q°F (400° C), use silicon-killed (not aluminum-killed) carbon steel. Above 85QflF (4S0BC), use lCr-%Mo or lWCr-%Mo,... 

Do not use i7Cr steel and avoid 12Cr steel because of embrittlement. To avoid graphitfeation, use silicon-killed carbon steels only (e.g, ASTM<161 A106. ASTM A515)... 

Materials of construction vessel stainless steel, unstabilized (304) nozzles as vessel skirt carbon steel, silicon killed Design pressure 1200 kN/m ... 

Common specifications such as ASTM A53 permit killed steel. (3) Because silicon killed and unkilled steels have different fracture toughness and also different design strengths, unintentional mix ups could cause fabrication, commissioning and/or operating problems. 

Higher tensile silicon-killed carbon-manganese steel, for use at intermediate and higher temperature. 38-42 70-80 BS. 1501-221 Grade 32B DIN 17155 19Mn5 ASTM A515 Grade 70... 

Silicon-killed carbon steel pipe for high temperature service... 

It should be noted that when [3.1] is used for semi-killed steels is relating composition to hardenability, and when it is used fo silicon-containing steels it is relating composition to hardenabilit-and likelihood of cracking. 

Allen, C. (1991b). The corrosion resistance of a silicon-killed galvanized steel in two synthetic mine waters. 16th. Int. Galv. Conf., EGGA, London, Paper GH3/1-12. 

Inclttdi extras for killed steel or for any minimum specified diUtxin up to 0.15%, inclusive, or any maximum spw ifiied silicon over 0.10 to 0.30 inclusive, d. Specification Extras... 

The first major materials decision which had to be made was whether to construct the out-of-core primary circuit in silicon-killed boiler steel or in an austenitic stainless steel. Factors in favour of mild steel were reduced costs, greater fabrication experience with mild steel vessels and piping, a diminution In activity levels from activated corrosion... 

The advantages of silicon-killed carbon steel (0.1% silicon minimum) for temperatures above... 

A section was cut from a circumferential weld region in storage tank B. The cracking was predominantly transverse to the weld. Chemical analysis was performed on samples cut from weld metal and base metal the results are given in Table 12.5 and show that the steel plate was not aluminium-or silicon-killed, but was most likely a rimmed grade. Cross sections were cut perpendicular to both transverse and longitudinal cracks and were examined metallographically. 

The most common deoxidizers are aluminium and silicon [22-24], When aluminium is used as the sole deoxidiser, the steel is called Al-killed. Usually, Al-killed steels contain a very low level of silicon if silicon is not purposely added as an alloying element. However, if silicon is used as a deoxidizer, the steel will inevitably contain a small amount of silicon at about 0.1-0.3%, depending on the degree of deoxidation required [23-25],... 

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