摘要:
A ferric stainless steel consists by weight of less than 0.03% carbon, less than 1% silicon, less than 1% manganese, less than 0.04% phosphorus, less than 0.03% sulphur, from 15% to 25% chromium, less than 0.03% nitrogen, from 3% to 6% aluminum, from 0.1% to 4% molybdenum. A small amount of rare-earth elements and yttrium of from 0.01% to 0.15% are added in the steel.
摘要:
A ferric stainless steel consists by weight of less than 0.03% carbon, less than 1% silicon, less than 1% manganese, less than 0.04% phosphorus, less than 0.03% sulphur, from 15% to 25% chromium, less than 0.03% nitrogen, from 3% to 6% aluminum, from 0.1% to 4% molybdenum. A small amount of rare-earth elements and yttrium of from 0.01% to 0.15% are added in the steel.
摘要:
A corrosion resistant alloy comprising in % by weight up to 0.05% of C, 10.00 to 18.00% of Cr, up to 1.00% of Si, up to 1.00% of Mn, more than 0.040% but not more than 0.150% of P, up to 0.050% of S, up to 0.60% of Ni and 0.005 to 0.50% of sol.Al, the balance being Fe and unavoidable impurities. The alloy has an enhanced pickling performance of the hot rolled material and an improved workability of the cold rolled material.
摘要:
A corrosion resistant alloy comprising in % by weight up to 0.05% of C, 10.00 to 18.00% of Cr, up to 1.00% of Si, up to 1.00% of Mn, more than 0.040% but not more than 0.150% of P, up to 0.050% of S, up to 0.60% of Ni and 0.005 to 0.50% of sol.Al, the balance being Fe and unavoidable impurities. The alloy has an enhanced pickling performance of the hot rolled material and an improved workability of the cold rolled material.
摘要:
A high strength chromium containing steel sheet having a tensile strength of at least 40 kgf/mm.sup.2, and excellent in corrosion resistance and workability, comprising, by weight, C:up to 0.030%, Si:up to 2.30%, Mn:up to 3.0%, P:more than 0.0005% and not more than 0.150%, S:up to 0.010%, Ni:up to 2.0%, Cu:more than 0% and not more than 2.0%, Cr:not less than 5.0% and less than 10.0%, N:up to 0.030%, V:not less than 0.01% and not more than 0.10%, and optionally at least one of 0.01 to 0.30% of Ti, 0.01 to 0.30% of Nb, 0.01 to 0.30% of Zr, 0.01 to 0.20% of Al and 0.0002 to 0.0200% of B, the amounts of Si, Mn, P, Ni and Cu being adjusted so that the relation:Si+Mn+10P+Ni+Cu>1.0% may be satisfied, the balance being iron and unavoidable impurities.
摘要:
A process for the production of a strip of a corrosion resistant alloy steel having excellent workability, which process comprises subjecting a cold rolled strip of a steel containing in % by weight as essential components up to 0.05% of C, 10.00 to 18.00% of Cr, 0.005 to 0.50% of sol. Al and more than 0.040% but not more than 0.150% of P to a final annealing, said final annealing being carried out by heating the cold rolled strip in a box annealing furnace to an annealing temperature within the range between 650.degree. C. and 900.degree. C., and maintaining the strip in the furnace at the annealing temperature, the rate of heating at which the strip is heated from 300.degree. C. to the annealing temperature being not faster than 300.degree. C./hr.
摘要:
A multifold pipe made by multiple rolling up and turning of a copper coated steel sheet into a multifold pipe, characterized in that said steel sheet is a cold rolled sheet of a super soft austenitic stainless steel comprising by weight: up to 0.05% of C, up to 1.0% of Si, up to 5.0% of Mn, from 9.0% to 15.0% of Ni, from 15.0% to 20.0% of Cr, up to 0.04% of N, up to 5.0% of Cu, the balance being Fe and unavoidable impurities, wherein the alloying elements are further adjusted so that both the two relations (1) and (2) noted below are satisfied:K=20.5+13.0.times.C+0.99.times.Si-1.1.times.Mn-Ni-0.4.times.Cu +0.4.times.Cr+117.1.times.N.ltoreq.19.5 (1)H=27.1+60.9.times.C+0.26.times.Si-Ni-0.79.times.Cu+0.68 .times.Cr+52.6.times.N.ltoreq.29.0 (2)The multifold pipe according to the invention is excellent in fluid tightness of its fused part and in corrosion resistance.
摘要:
A chromium containing steel sheet excellent in corrosion resistance and workability, comprising, by weight, C:up to 0.030%, Si:up to 0.5%, Mn:up to 0.5%, P:up to 0.040%, S:up to 0.010%, Ni:up to 0.3%, Cu:up to 0.3%, Cr: not less than 5.0% and less than 11.0%, N:up to 0.030%, V:not less than 0.01% and not more than 0.10%, and optionally at least one of 0.01 to 0.30% of Ti, 0.01 to 0.30% of Nb, 0.01 to 0.30% of Zr, 0.01 to 0.20% of Al and 0.0002 to 0.0200% of B, the amounts of Si, Mn, P, Ni and Cu being adjusted so that the relation:Si+Mn+10P+Ni+Cu.ltoreq.1.0% may be satisfied, the balance being iron and unavoidable impurities.
摘要:
A ferritic stainless steel excellent in high temperature oxidation resistance and scale adhesion which consists essentially of in mass %, 0.03% maximum C, from 0.80% to 1.20% Si, from 0.60% to 1.50% Mn, from 11.0% to 15.5% Cr, from 0.20% to 0.80% Nb, 0.1% maximum Ti (inclusive of non-addition), not less than 0.02% and less than 0.30% Cu, 0.03% maximum N, 0.05% maximum Al (inclusive of non-addition), 0.012% maximum O, the balance being Fe and unavoidable impurities, and wherein the Mn/Si ratio is within the range between 0.7 and 1.5 and the alloying elements are adjusted so that the following relations (1), (2), and (3) and preferably (4) defined herein may be satisfied and wherein the steel exhibits an oxidation weight gain of not more than 0.02 kg/m.sup.2 and an amount of scale which has spalled of not more than 0.01 kg/m.sup.2 after a continuous heating in atmospheric air at 900.degree. C. for 100 hours and the steel exhibits an oxidation weight gain of not more than 0.4 kg/m.sup.2 and an amount of scale which has spalled of not more than 0.02 kg/m.sup.2 after a continuous heating in atmospheric air at 1000.degree. C. for 100 hours.
摘要翻译:PCT No.PCT / JP94 / 00693 Sec。 371日期1994年12月22日第 102(e)日期1994年12月22日PCT 1994年4月26日PCT PCT。 公开号WO94 / 25636 日本1994年11月10日。一种耐高温氧化性和水垢附着性优异的铁素体不锈钢,其主要组成为质量%,0.03%最大C,0.80%〜1.20%Si,0.60%〜1.50%Mn, 11.0%〜15.5%的Cr,0.20%〜0.80%的Nb,0.1%的最大Ti(包括不添加),不小于0.02%且小于0.30%的Cu,0.03%的最大值N,0.05%的最大值Al 的不添加),0.012%的最大O,余量为Fe和不可避免的杂质,并且其中Mn / Si比在0.7和1.5之间,并且合金元素被调整为使得以下关系式(1),( 2),和(3)和优选(4)可以满足,并且其中钢表现出不超过0.02kg / m 2的氧化重量增加和剥离量不大于0.01kg / m 2 在大气中在900℃下连续加热100小时,钢的氧化重量增加不超过0.4kg / m 2 并且在大气中在1000℃下连续加热100小时后,其剥离量不超过0.02kg / m 2。
摘要:
A heat resisting ferritic stainless steel which comprises, by weight, up to 0.03% of C, from 0.1 to 0.8% of Si, from 0.6 to 2.0% of Mn, up to 0.006% of S, up to 4% of Ni, from 17.0 to 25.0% of Cr, from 0.2 to 0.8% of Nb, from 1.0 to 4.5% of Mo, from 0.1 to 2.5% of Cu, and up to 0.03% of N, and optionally one or more of appropriate amounts of Al, Ti, V, Zr, W, B and REM, the balance being Fe and unavoidable impurities, wherein the alloying elements are further adjusted so that the ratio of Mn%/S% is not less than 200, [Nb] defined by the equation: [Nb]=Nb%-8 (C%+N%) is not less than 0.2, and (Ni%+Cu%) is not more than 4. The stainless steel according to the invention is suitable for use in constructing an exhaust gas path-way of an automobile, particularly, a path-way from an engine to a converter, which is exposed to high temperatures, and which requires an improved low temperature toughness and a high resistance to weld cracking due to high temperatures.