low alloy steel plate
A low-alloy steel is a type of metal mixture composed of steel and another metals that possess desirable properties. Low-alloy steel contains about 1%-5% of alloying elements. Therefore, it possesses precise chemical compositions that provide better mechanical properties that are intended to prevent corrosion.
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Low-alloy steels typically undergo heat treatment, normalizing and tempering during production. They are also weldable. However, weld heat treatment is necessary in order to avoid weld cracking.
Significant advantages of low-alloy steels over mild steel are:
High yield strength
Able to withstand high temperatures
Good creep strength
Oxidation resistance
Hydrogen resistance
Low temperature ductility
A higher yield strength and creep strength is desirable because low-alloy steels are used to manufacture thin walled pressure vessels. Low-alloy steels such as 0.5 Mo and 12 CrMoVW are used for their good creep properties in steam boilers, refinery crackers and reformers. The upper temperature limit for low-alloy steels is about 600°C (1112°F).
| Thickness | Yield KSI | Tensile KSI | % Elongation. Min | |
| 8" | 2" | |||
| Thru 4" | 50 min | 70 min | 16 | 19 |
| >4"thru5" | 46 min | 67 min | - | 19 |
| >5"thru8" | 42 min | 63 min | - | 19 |
| C | P | S | Mn | Ni | Cr | Mo | V | Cu | Cbj | Si | |
| Grade A | .19 | .04 | .05 | .80/1.25 | .40 | .40/.65 | - | .02/.10 | .25/.40 | - | .30/.65 |
| Grade B | .20 | .04 | .05 | .75/1.35 | .50 | .40/.70 | - | .01/.10 | .20/.40 | - | .15/.50 |
| Grade C | .15 | .04 | .05 | .80/1.35 | .25/50 | .30/.50 | - | .01/.10 | .20/.50 | - | .15/.40 |
| Grade K | .17 | .04 | .05 | .50/1.20 | .40 | .40/.70 | .10 | - | .30/.50 | .005/.05 | .25/.50 |
Shandong Kuaima Steel Co., Ltd. has advanced special smelting, investment casting, pipe making and other production equipment. The company has 15 advanced production lines, which can independently produce Alloy steel plate，hot/cold rolled steel, galvalume steel, galvanized steel, prepainted steel and stainless steel coils, strips, plates, plates, pipes, bars and other products. The standing inventory is more than 450,000 tons to meet the customer's demand for delivery time.
We have professional testing equipment. We have our own testing center laboratory to guarantee the quality of our products.
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