Abstract:
Provided is a ferritic stainless steel having a chemical composition containing, in mass%: 0.003% to 0.025% of C; 0.05% to 1.00% of Si; 0.05% to 1.00% of Mn; 0.04% or less of P; 0.01% or less of S; 16.0% to 23.0% of Cr; 0.20% to 0.80% of Cu; 0.05% to 0.60% of Ni; 0.20% to 0.70% of Nb; 0.005% to 0.020% of N; and the balance being Fe and incidental impurities, in which a nitrogen-enriched layer is present that has a nitrogen concentration peak value of 0.03 mass% to 0.30 mass% at a depth of within 0.05 µm of a surface of the steel.
Abstract:
Provided is a ferritic stainless steel foil for a solar cell substrate excellent in terms of threading performance with which it is possible to maintain sufficient hardness to suppress, for example, buckling during threading when a solar cell is manufactured using a roll-to-roll method. The ferritic stainless steel foil for a solar cell substrate has a chemical composition containing, by mass%, Cr: 14% or more and 18% or less, a Vickers hardness of Hv250 or more, and a Vickers hardness of Hv250 or more after the substrate has undergone an optical absorber layer growth process in which the substrate is held in a temperature range of 450°C or higher and 600°C or lower for a duration of 1 minute or more.
Abstract:
An object is to provide at a low cost a metal sheet which can be ideally used as a separator of a proton-exchange membrane fuel cell and which has not only low contact resistance but also excellent durability in the environment in which the separator is used. Specifically, a metal sheet for a separator of a proton-exchange membrane fuel cell consists of a metal substrate on the surface of which a film made of a Sn alloy layer containing conducting particles is formed.
Abstract:
Provided is a ferritic stainless steel that has excellent corrosion resistance and displays good brazing properties when brazing is carried out at high temperature using a Ni-containing brazing metal. These effects are obtained as a result of the steel having a chemical composition containing, in mass%: 0.003%-0.020% of C; 0.05%-1.00% of Si; 0.10%-0.50% of Mn, 0.04% or less of P; 0.01% or less of S; 16.0%-25.0% of Cr; 0.05%-0.60% of Ni; 0.25%-0.45% of Nb; 0.005%-0.15% of Al; 0.005%-0.030% of N; and at least one selected from 0.50%-2.50% of Mo and 0.05%-0.80% of Cu, the balance being Fe and incidental impurities, and as a result of a nitrogen-enriched layer being created that has a nitrogen concentration peak value of 0.03 to 0.30 mass% at a depth of within 0.05 µm of a surface of the steel.
Abstract:
[Abstract] Provided is a ferritic stainless steel sheet for a urea SCR casing which is excellent in terms of corrosion resistance in a urea SCR environment and which increases the durability of a urea SCR casing. The steel sheet has a chemical composition containing, by mass%, C: 0.020% or less, Si: 0.01% or more and 0.50% or less, Mn: 0.01% or more and 0.50% or less, P: 0.040% or less, S: 0.010% or less, Al: 0.01% or more and 0.20% or less, Cr: 20.5% or more and 24.0% or less, Cu: 0.40% or more and 0.80% or less, Ni: 0.05% or more and 0.6% or less, N: 0.020% or less, one or both selected from among Ti: 0.01% or more and 0.40% or less and Nb: 0.01% or more and 0.55% or less, and the balance being Fe and inevitable impurities, in which the relationship Ti + Nb x 48/93 ‰¥ 8 x (C + N) (in the relational expression, Ti, Nb, C, and N denote the contents (mass%) of the corresponding chemical elements) is satisfied.
Abstract translation:[摘要]本发明提供一种尿素SCR壳体用的铁素体系不锈钢板,其尿素SCR环境下的耐腐蚀性优异,并且尿素SCR壳体的耐久性提高。 钢板的组成以质量%计含有C:0.020%以下,Si:0.01%以上且0.50%以下,Mn:0.01%以上且0.50%以下,P:0.040%以下 ,S:0.010%以下,Al:0.01%以上且0.20%以下,Cr:20.5%以上且24.0%以下,Cu:0.40%以上且0.80%以下,Ni:0.05%以上 和0.6%或更少,N:0.020%或更少,选自Ti:0.01%或更多和0.40%或更少中的一种或两种和Nb:0.01%或更多和0.55%或更少,余量为Fe和不可避免的 Ti + Nb x 48/93‰8×(C + N)(在关系式中,Ti,Nb,C和N表示相应化学元素的含量(质量%))的关系的杂质是 满意。