FIELD: metallurgy.
SUBSTANCE: iron-base hard solder for soldering stainless steel comprises the following components in wt %: chromium 15-30, manganese ≤5.0, nickel 9-30, molybdenum ≤4.0, nitrogen ≤1.0, silicon 1.0-7.0, boron 0-0.2, phosphorus 3.5-5.5, is required, 0.0-2.5 wt % everyone of one or several elements selected from the group including vanadium, titanium, tungsten, aluminium, niobium, hafnium and tantalum, iron and impurities making the rest. Solder features difference between solidus temperature and liquidus temperature of 75°C. Method of soldering comprises applying solder of part from stainless steel, heating it in nonoxidising atmosphere, in reducing atmosphere, in vacuum or combination thereof, to, at least 250°C for, at least, 10 minutes. Part is heated to about 1800°C for, at least, 10 min and to below 1200°C for, at least, 5 min. Now, if required, one or several above described steps are repeated.
EFFECT: narrow temperature interval of crystallisation, higher fatigue strength.
21 cl, 1 dwg, 6 tbl, 3 ex
