What is 1.4864 material?
1.4864 is the EN material number for X12NiCrSi35-16, a heat-resistant austenitic nickel-iron-chromium alloy containing roughly 33 to 37 percent nickel, 15 to 17 percent chromium and 1 to 2 percent silicon, with iron as the balance. It is standardised in EN 10095 for heat-resisting steels and nickel alloys. The silicon addition gives it resistance to oxidation, carburisation and nitridation at high temperature, and the high nickel content makes it resistant to chloride stress corrosion cracking and to sigma-phase embrittlement.
Is 1.4864 the same as UNS N08330 or Alloy 330?
They are close equivalents but not identical. EN 1.4864 specifies chromium at 15.0 to 17.0 percent, while UNS N08330 specifies 17.0 to 20.0 percent, so a part ordered to N08330 will not automatically satisfy 1.4864 and the reverse is also true. Both are commonly sold under the industry name Alloy 330 and both are covered by the AISI 330 designation. State which specification governs on the purchase order, because the certificate is issued against that specification.
What is the chemical composition of 1.4864?
To EN 10095, 1.4864 contains carbon max 0.15 percent, silicon 1.00 to 2.00 percent, manganese max 2.00 percent, phosphorus max 0.045 percent, sulphur max 0.015 percent, chromium 15.0 to 17.0 percent, nickel 33.0 to 37.0 percent, with iron as the balance. Molybdenum, titanium, vanadium, tungsten and niobium are not specified elements in this grade.
Can 1.4864 be hardened by heat treatment?
No. 1.4864 is a solid-solution austenitic alloy and cannot be strengthened by quenching or by precipitation ageing. The only heat treatment applied is solution annealing, normally between 1020 and 1120 degrees Celsius followed by water quenching or the fastest practical cooling, which restores the structure after forging. Room-temperature strength can only be raised by cold work, which does not apply to most forged sections.
What is the forging temperature range for 1.4864?
1.4864 is hot worked between about 1150 and 950 degrees Celsius. The alloy must not be forged or bent between roughly 650 and 870 degrees Celsius, because ductility is low in that band and cracking is likely. Reheat rather than continue forging once the workpiece falls below the finishing temperature, and solution anneal after hot working to restore structure and corrosion resistance.
What are the mechanical properties of 1.4864 in the solution annealed condition?
Typical room-temperature values in the solution annealed condition are a 0.2 percent proof strength of 205 to 295 MPa, a tensile strength of 550 to 590 MPa, elongation of 40 to 45 percent, and a hardness of about 70 to 85 HRB. Density is approximately 8.08 grams per cubic centimetre. Actual values are reported on the mill test certificate for each heat.
Which ultrasonic testing standard applies to 1.4864 forgings?
Because 1.4864 is austenitic, the applicable European ultrasonic standard is EN 10228-4, which covers austenitic and austenitic-ferritic steel forgings. EN 10228-3 applies to ferritic and martensitic forgings and is not the correct choice for this grade. ASTM A388 and SEP 1921 are also used where the order specifies them. Jiangyin Jiangnan Metal states the standard and acceptance class on the works order and reports the result on the certificate.
What forms of 1.4864 forgings does Jiangyin Jiangnan Metal supply?
Jiangyin Jiangnan Metal forges 1.4864 into seamless rolled rings, forged rings, shafts, spindles, flanges, round bars, discs and disks, tube sheets, sleeves, bushings, valve bodies and seat rings, nozzles and forged tube blanks. Parts are supplied as-forged, rough-machined or finish-machined to the customer drawing, solution annealed, with EN 10204 3.1 certificates.
What is 1.4864 used for?
1.4864 is used where components must survive prolonged high temperature with thermal cycling and carburising atmospheres. Typical applications are heat-treatment furnace fixtures, baskets and muffles, radiant and combustion tubes, thermocouple sheaths, flare-stack tips, carburising boxes, gas turbine and compressor parts, heat exchanger and pressure vessel components, salt pots, and rotating parts in chemical and plunger pumps.
How do I order 1.4864 forgings and how long does it take?
Send a drawing or dimensions, the governing specification (EN 1.4864 or UNS N08330), the quantity, the supply condition, the ultrasonic testing standard and acceptance class, and the certificate level to sales@steelforgepieces.com. A quotation is issued within 24 working hours. There is no minimum order quantity because open-die forging requires no part-specific tooling.