C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/137, 148/50.2
C22C 38/18 (2006.01) C21D 1/20 (2006.01) C21D 6/00 (2006.01) C21D 8/00 (2006.01) C22C 38/38 (2006.01)
Patent
CA 1297320
ABSTRACT A relatively low cost, high strength, high toughness bar and sheet steel, which is substantially non-susceptible to the formation of delayed surface cracks in the as-rolled condition and its method of preparation, are provided, the constitution of the steel on a percentage mass to mass basis being as follows: C = 0, 21 - 0,28 Mn = 0, 80 - 1,80 Cr = 1, 60 - 2,10 Si = 0, 35 maximum Al = 0, 02 - 0,05 P and S each = 0, 025 maximum Fe = the balance; the steel being characterised in that its composition is such that, upon air cooling following rolling, the transformation temperature of the steel during the cooling is at a sufficiently high level to ensure that there is sufficient thermal contraction possible after the transformation has been completed to accomodate at least the thermal expansion which had taken place during the transformation.
557599
Badenhorst Rudolf P.
Mostert Roelof J.
Badenhorst Rudolf P.
Iscor Limited
Mccarthy Tetrault Llp
Mostert Roelof J.
LandOfFree
High strength high toughness steel does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High strength high toughness steel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High strength high toughness steel will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1182096