Martensitic stainless steel

Details Martensitic stainless steel Martensitic stainless steel

C - Chemistry, Metallurgy

22

C

C22C 38/00 (2006.01) C22C 38/04 (2006.01) C22C 38/20 (2006.01) C22C 38/22 (2006.01) C22C 38/40 (2006.01) C22C 38/42 (2006.01) C22C 38/44 (2006.01)

Patent

CA 2463688

A martensitic stainless steel comprising C: 0.01 - 0.10%, Si: 0.05 - 1.0%, Mn: 0.05 - 1.5%, P: not more than 0.03%, S: not more than 0.01%, Cr: 9 - 15%, Ni: 0.1- - 4.5%, Al: not more than 0.05% and N: not more than 0.1%, and further comprising at least one of Cu: 0.05 - 5% and Mo: 0.05 - 5% in mass %, the residual being Fe and impurities, is provided, wherein the contents of Cu and Mo satisfy the following formula (a) or (b), 0.2% .ltorsim. Mo+Cu/4 .ltorsim. 5% ... (a) 0.55% .ltorsim. Mo+Cu/4 .ltorsim. 5% ...(b) and wherein the hardness is 30 - 45 in HRC and the carbide amount in grain boundaries of the prior austenite is not more than 0.5 volume %. The marensitic stainless steel has excellent properties regarding the sulfide stress cracking resistance, the resistance to corrosive wear and the localized corrosion.

L'invention concerne un acier inoxydable martensitique comprenant 0,01 0,10 % de C, 0,05 1,0 % de Si, 0,05 1,5 % de Mn, 0,03 % ou moins de P, 0,01 % ou moins de S, 9 - 15 % de Cr, 0,1 4,5 % de Ni, 0,05 % ou moins de Al et 0,1 % ou moins de N en masse et au moins 0,05 - 5 % de Cu et 0,05 - 5 % de Mo, le reste étant constitué de Fe et d'impuretés. Le contenu en Cu et en Mo satisfait la formule (a) ou (b), 0,2 % <= Mo + Cu/4 <= 5 % (a), 0,55 % <= Mo + Cu/4 <= 5 % (b); la dureté est de 30 - 45 dans HRC et la quantité de carbure dans les limites de grain d'austénite antérieur est inférieure ou égale à 0.5 % en volume. L'acier inoxydable martensitique possède d'excellentes propriétés de résistance à la fissuration sous contrainte de sulfure, et de résistance à l'usure corrosive et à la corrosion localisée.

Affiliated with

Also associated with

Rating

Martensitic stainless 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 Martensitic stainless steel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Martensitic stainless steel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1573270