Development of BethStar 50-A New 50 ksi Yield Strength HSLA Plate

Abrams, Halle; Paules, John R.

doi:10.4271/850785

Cited by 2 publications

(3 citation statements)

References 2 publications

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“…The chemical composition determinations, in particular the low sulfur contents and the presence of calcium, revealed that both of these steels were made using inclusion shape control practice (1).…”

Section: Steels Received For Mechanical Property and Fracture Touehne...mentioning

confidence: 99%

Mechanical properties and fracture toughness of AAR TC128 grade B steel and micro-alloyed, control-rolled steel, A 8XX grade B, from -80[degrees] F to + 73[degrees] F

Hicho¹,

Smith²

1990

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Section: Steels Received For Mechanical Property and Fracture Touehne...mentioning

confidence: 99%

Mechanical properties and fracture toughness of AAR TC128 grade B steel and micro-alloyed, control-rolled steel, A 8XX grade B, from -80[degrees] F to + 73[degrees] F

Hicho¹,

Smith²

1990

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“…However, the input slab must be of a high internal quality, so that even with a low reduction ratio of y4, ultrasonically sound thick plates can be produced. Many steel producers, including BHP Steel, Australia, Bethelem Steel, USA and Lukens Steel, USA, produce high strength thick plates [2][3][4][5] through the continuous casting route (detailed in Table 1). Structural grade high strength plates (yield strength (YS) 345 MPa min., ultimate tensile strength (UTS) 450 MPa min.)…”

Section: Introductionmentioning

confidence: 99%

“…Bethelehem Steel Corp. has produced high strength low alloy (HSLA) products such as vanadium alloyed steel (ASTM standard A572 Gr. 42 and 50) and corrosion resistant Ni-Cu-Cr-V steel (ASTM standard A588) in the thickness range of 13-64 mm for many years 4 in both hot rolled and normalised conditions. Newer plate products providing replacements for normalised grades from Bethelehem Steel Corp., designated as BethStar, constitute a family of controlled rolled grades conforming to ASTM standard A656.…”

Section: Introductionmentioning

confidence: 99%

Production of thick plate on the hot strip mill at the Rourkela steel plant (RSP)

Deva¹,

Mohapatra²,

Datta³

2004

Ironmaking & Steelmaking

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Thick plate producers worldwide have shifted from the ingot casting route to the concast route owing to certain inherent advantages, namely, low cost, high yield, low energy consumption and high quality of the cast product. The major challenge towards adoption of concast technology has been achieving the desired mechanical properties and internal soundness in the final product using a low reduction ratio (approximately 3-5) during hot rolling. Steelmakers across the world have resorted to microalloying, adequate soaking and heavy reductions during hot rolling using modern high powered plate mills to overcome this impasse. This is not possible at Rourkela steel plant (RSP), which is equipped with an underpowered plate mill with low load bearing capacity (y3000 t). Thus, the novel ideal of utilising the roughing section of the hot strip mill of RSP was conceived, whereby the R 0 and R 1 stands could serve as the roughing and finishing stands of a 'plate mill'. As the maximum permissible reduction per pass is significantly higher in the R 0 and R 1 stands (15-25%), compared with the plate mill (10-15%), the rolling of thick plates became a reality. With the objective of producing ultrasonically sound thick plate (.40 mm) via the hot strip mill route at RSP, experimental rolling of 50 mm thickness plate of plain C-Mn steel (IS 2062 Gr. B) was undertaken. Slabs processed through the basic oxygen furnace-vacuum arc degassingcontinuous casting (LD-VAD-CC) route were rolled into thick plate using a specially designed draft schedule in order to weld the internal defects in slabs and achieve high strength with good toughness properties in the final product. The rolled plates were subjected to an ultrasonic test according to ASTM standard A578 level 3, and were found to be satisfactory. The present paper describes the rolling practice for the production of 50 mm thickness plate of plain carbon steel having minimum yield and tensile strengths of 230 and 410 MPa, respectively, with guaranteed ultrasonic soundness.

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Development of BethStar 50-A New 50 ksi Yield Strength HSLA Plate

Cited by 2 publications

References 2 publications

Mechanical properties and fracture toughness of AAR TC128 grade B steel and micro-alloyed, control-rolled steel, A 8XX grade B, from -80[degrees] F to + 73[degrees] F

Mechanical properties and fracture toughness of AAR TC128 grade B steel and micro-alloyed, control-rolled steel, A 8XX grade B, from -80[degrees] F to + 73[degrees] F

Production of thick plate on the hot strip mill at the Rourkela steel plant (RSP)

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