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Alternative to forging

 

Centrifugal casting: an alternative to forging and welding construction


 
Centrifugal casting is an alternative to forging or to wrought processes: ring rolling, stamping and open-die forging.

Centrifugal casting consists of pouring liquid metal into a metal coquille/mould under high acceleration (> 50g). LBI produces components by horizontal or vertical centrifugal casting. The solidified alloy, under the effect of the centrifugal pressure, has a fine and homogeneous structure.

 
Many applications
Centrifugal castings are an alternative to forgings in several sectors such as nuclear, defence, shipbuilding, machine tools... We offer different centrifugal casting pieces made of stainless steel, copper based alloys or aluminium in different shapes and sizes.

LBI can provide different shapes:

  • tube
  • ring
  • bushing

For various applications:

  • pressure vessel component
  • packaging for the storage or transport of radioactive waste
  • submarine mast or surface vessel
  • pump body
  • autoclave body
  • chromatography column body

 
Our strengths

A more economical process: LBI has a large range of casting toolings. Therefore, making a new specific mould is rarely necessary.
In addition, the machining time is optimized due to the centrifugal casting process of an as-cast part whose shapes are already close to the finished part. By delivering a fully machined part according to your plan, LBI values all the machining chips that are subsequently remelted.
Better characteristics: the characteristics of the centrifugal castings are considerably improved by the reduction of internal tensions (low but balanced tensions).
Thus, centrifugal castings have better dimensional stability during machining and their use. Mechanical characteristics meet your expectations and your specifications.
Unique capabilities: we offer components with optimized shapes thanks to our specific tools and we are able to produce complex shapes with the possibility of serial production.

Thanks to our casting machines, it is possible to cast raw castings up to 20t and 6m in diameter, while ensuring all the necessary heat treatments, machining and associated quality controls.

LBI is certified: ISO 9001 v2015 - EN 9100 v2016 - TÜV AD2000 Merkblatt - 97/23/EC - 2014/68/EU

 
Flexibility and elaboration of the alloys:
We produce high-quality centrifugal casting components and we propose specific alloys that can be customized.
LBI develops the alloys according to your need in order to reach the mechanical and physical characteristics that are specific to a particular application:
magnetic permeability
maximum controlled levels of sulphur, phosphorus, carbon and cobalt
corrosion resistance (specific PREN)
weldability
lead content

 
Forgings and centrifugal castings comparison:

(1) Case of a single flange bush or with a collar on the outer diameter:

The metal amount required to produce the same piece is much lower and optimized by centrifugal casting than forging. In centrifugal casting, the weight of the as-cast part is directly optimized.

Flange bushing – forging
Flange bushing – centrifugal casting
Flange liner – forging
Flange liner – centrifugal casting

 
(2) Case of complex shapes:

Conical piece – forging
Conical piece – centrifugal casting
Multiple flange liner – forging
Multiple flange liner – centrifugal casting

 
(3) Welded component:

Welding assembly
Body
Flange
One-piece casting
• No welding
• Reduction of the manufacturing cycle
• Reduction of tensions
• Reduction of deformations
➜ More economical!

 
 
Some designations are specific to wrought alloys (forged, rolled, etc.). To help you find your way around, here is a non-exhaustive list of approximate casting equivalences. These equivalences are not absolute and there may be some differences in chemical analyzes or physical characteristics. It should therefore be checked on a case-by-case basis if this meets your specifications.
 

WroughtCasting equivalenceWNr.DesignationStandardsGradeASTM standardsComment
1.4362 => 1.4392 GX3CrNi23-4
1.4410 => 1.4417 GX2CrNiMoN25-7-3 EN 10213/EN 10283/NFA32060 5A A890 / A995
1.4410 => 1.4469 GX2CrNiMoN25-7-4
1.4460 => GX4CrNiMoN27-5-2 3A A890 / A995
1.4462 => 1.4470 GX2CrNiMoN22-5-3 EN 10213/EN 10283/NFA32060 4A A890 / A995
1.4501 => GX2CrNiMoCuWN25-7-4 6A A890 / A995
1.4508 => GX2CrNiMoCuWN25-7-4 6A A890 / A995
1.4858 => NFe30C20DU NFA 32060 CU5MCuC A494
2.4603 => NiCr30FeMo
2.4610 => NC6455 C-NiCr16Mo16 NFA 32060 CW-2M A494 With reserve on carbon : C£0,03% !
2.4636 => NC6455 C-NiCr16Mo16 NFA 32060 CW-2M A494 With reserve on carbon : C£0,03% !
2.4819 => NC6985 C-NiCr22Fe20Mo7Cu2 NFA 32060 With reserve on carbon : C£0,03% !
255 => 1.4515 GX2CrNiMoCuN26-6-3 SEW 410 1C A890
304 => 1.4308 GX5CrNi19-10 EN 10213 / EN 10283 CF8 A351 / A743 / A744
304Cb => 1.4552 GX5CrNiNb18-9 EN 10213 / EN 10283 CF8C A351 / A744
304L => 1.4309 GX2CrNi19-11 EN 10213 / EN 10283 CF3 A351 / A743 / A744
309S => GX6CrNi23-14 CH8 A351
309H => GX8CrNi23-14 CH10 A351 / A743 With C=0,04-0,10%
309Cb => GX6CrNiNb23-14
309HCb => 1.4840 GX8CrNiNb23-14 With C=0,04-0,10%
310S => GX6CrNi25-20
310H => GX8CrNi25-20 CK20/CPK20 A351 / A743 / A451 With C=0,04-0,10%
310Cb => Z8CN25-20 NFA 32056
310HCb => GX8CrNiNb25-20 With C=0,04-0,10%
316 => 1.4408 GX5CrNiMo19-11-2 EN 10213 / EN 10283 CF8M A351 / A743 / A744
316Cb => 1.4581 GX5CrNiMoNb19-11-2 EN 10213 / EN 10283
316L => 1.4409 GX2CrNiMoN19-11-2 EN 10213 / EN 10283 CF3M A351 / A743 / A744
316Ti => 1.4581 GX5CrNiMoNb19-11-2 EN 10213 / EN 10283 Stabilized in Nb instead of Ti (*)
317L => 1.4446 GX2CrNiMoN17-13-4 EN 10283 CG3M A351
321 => 1.4552 GX5CrNiNb18-9 EN 10213 / EN 10283 CF8C A351 / A744 Stabilized in Nb instead of Ti (*)
347 => 1.4552 GX5CrNiNb18-9 EN 10213 / EN 10283 CF8C A351 / A744
410 => 1.4011 GX12Cr12 EN 10283 CA15 A743
431 => 1.4059 GX22CrNi17 SEW 410-98 S43100
800 => 1.4859 GX10NiCrSiNb32-20 EN 10213 / EN 10295 CT15C A351
904L => 1.4584 GX2NiCrMoCu25-20-5 EN 10283 CN3M A743
2205 => 1.4470 GX2CrNiMoN22-5-3 EN 10213 / EN 10283 4A A890 / A995
2507 => 1.4469 GX2CrNiMoN25-7-4 EN 10213 / EN 10283 5A A890 / A995
Carpenter 20Cb3® => 1.4559 G-X2NiCrMoCuNb42-20
Ferralium® 255 3SC => 1.4515 GX2CrNiMoCuN26-6-3 SEW 410-98 1C A890 / A995
Ferralium® SD40 => 1.4515 GX2CrNiMoCuN26-6-3 SEW 410-98 1C A890 / A995
Hasteloy® B => ND28 NFA 32060 N-12VM A494
Hasteloy® B2 => NC0007 C-NiMo31 NFA 32060 N-7M A494
Hasteloy® C => NC0002 C-NiMo17Cr16Fe6W4 NFA 32060 CW-12MW A494
Hasteloy® C22 => NiCr21Mo14W CX2MW A494 With reserve on carbon : C£0,03% !
Hasteloy® C276 => NiMo16Cr15W CW-12W A494
Hasteloy® C4 => NC6455 C-NiCr16Mo16 NFA 32060 CW-2M A494 With reserve on carbon : C£0,03% !
Hasteloy® G => NiCr22Mo6Cu
Hasteloy® G3 => NC6985 C-NiCr22Fe20Mo7Cu2 NFA 32060 With reserve on carbon : C£0,03% !
Hasteloy® G30 => NiCr30FeMo
Hasteloy® X => NiCr30FeMo
Incoloy® 800 / Alloy 800 => 1.4859 GX10NiCrSiNb32-20 EN 10213 / EN 10295 CT15C A351
Incoloy® 825 => NFe30C20DU NFA 32060 CU5MCuC A494
Inconel® 600 / N06600 => NC16fe11 NFA 32060 CY-40 A494
Inconel® 601 / N06601 => NC 23 Fe 14 Spec. LBI
Inconel® 625 => NC6625 C-NiCr22Mo9Nb4 NFA 32060-01 CW-6MC A494
Invar®/NILO® 36 => Ni36
Nicrofer® 3220 => 1.4859 GX10NiCrSiNb32-20 EN 10213 / EN 10295 CT15C A351
Nicrofer® 3620Nb => 1.4559 G-X2NiCrMoCuNb42-20
Nicrofer® 4221 => NFe30C20DU NFA 32060 CU5MCuC A494
Nicrofer® 6020 => NFe30C20DU NFA 32060 CU5MCuC A494
Nicrofer® 6023 => NC 23 Fe 14 Spec. LBI
Nicrofer® 7216/7216H => NC16fe11 NFA 32060 CY-40 A494
Nicrofer® 7520 => NiCr20Fe5Ti
Nicrofer® 7520Ti => NiCr20Ti
Nimofer® 6616HMo => NC6455 C-NiCr16Mo16 NFA 32060 CW-2M A494 With reserve on carbon : C£0,03% !
Nimonic® 75 => NiCr20Fe5Ti
Nimonic® 80 => NiCr20Ti Fe = 3% max
Pernifer® 36 => Ni36
UNS N26455 => NC6455 C-NiCr16Mo16 NFA 32060 CW-2M A494 With reserve on carbon : C£0,03% !
UNS S31803 => 1.4470 GX2CrNiMoN22-5-3 EN 10213/EN 10283/NFA32060 4A A890 / A995
UNS S32205 => 1.4470 GX2CrNiMoN22-5-3 EN 10213/EN 10283/NFA32060 4A A890 / A995
UNS S32304 => 1.4392 GX3CrNi23-4
UNS S32520 => 1.4515 GX2CrNiMoCuN26-6-3 SEW 410-98 1C A890 / A995
UNS S32550 => 1.4515 GX2CrNiMoCuN26-6-3 SEW 410-98 1C A890 / A995
UNS S32760 => GX2CrNiMoCuWN25-7-4 6A A890 / A995
UNS S32950 => GX4CrNiMoN27-5-2 3A A890 / A995 See 1.4460
UNS S43100 => GX22CrNi17 SEW 410-98 S43100
URANUS® 45N => 1.4470 GX2CrNiMoN22-5-3 EN 10213/EN 10283/NFA32060 4A A890 / A995
URANUS® 47N => 1.4468 GX2CrNiMoN25-6-3 EN10283/EN10340/NFA32060 J93550 A872
URANUS® 52N => 1.4515 GX2CrNiMoCuN26-6-3 SEW 410-98 1C A890 / A995
URANUS® 52N+ => GX2CrNiMoCuWN25-7-4 6A A890 / A995
XM-26 => 1.4347 GX6CrNiN26-7 EN 10283 / NFA 32060
ZERON® 100 => GX2CrNiMoCuWN25-7-4 6A A890 / A995
ZERON® 25 => 1.4468 GX2CrNiMoN25-6-3 EN10283/EN10340/NFA32060 J93550 A872

WroughtCasting equivalenceWNr.DesignationStandardsGradeASTM standardsComment
AMB® 1 => CC331G CuAl10Fe2-C EN 1982 C95200/C95400 B271
AMB® 2 => 2.0958 G-CuAl8Mn DIN 1714
AMPCO® A45 => CuAl10Ni5Fe3 AMS 4880
AMPCO® M4 => CuAl10Ni5Fe5 AMS 4881
AMS 4590 / C63020 => CuAl10Ni5Fe5 AMS 4881
AMS 4640 / C63000 => CuAl10Ni5Fe3 AMS 4880
CMR 15 => CC140C CuCr1-C EN 1982 C81500
CMR 16 => CuCrZr
Cunifer 10 => CC380H CuNi10Fe1Mn1-C EN 1982 C96200 B369
Cunifer 30 => CC381H CuNi30Fe1Mn1-C EN 1982 C96400 B369
LBU® => CC754S CuZn39Pb1Al-C EN 1982 C86400/C86500 B271
MONEL® 400 - NA1 => NC4135 C-NiCu30 NFA 32060 M35-1/M35-2 A494
MONEL® 400 - NA1 => 2.4365.01 G-NiCu30Nb DIN 17730
MONEL® 400 - NA2 => 2.4367.01 G-NiCu30Si3 DIN 17730 M-30H A494
MONEL® 400 - NA3 => 2.4368.01 C-NiCu30Si4 NFA 32060 M-25S A494
MONEL® 400 - NA3 => G-NiCu30Si4 DIN 17730
NAVINIC 10® => CC380H CuNi10Fe1Mn1-C EN 1982 C96200 B369
NAVINIC 30® => CC381H CuNi30Fe1Mn1-C EN 1982 C96400 B369
NB 10® => CC380H CuNi10Fe1Mn1-C EN 1982 C96200 B369
NB 30® => CC381H CuNi30Fe1Mn1-C EN 1982 C96400 B369
NC4 => CC333G CuAl10Fe5Ni5-C EN 1982 C95800 B271
Nicorros® => NC4135 C-NiCu30 NFA 32060 M35-1/M35-2 A494
Nicorros® => 2.4365.01 G-NiCu30Nb DIN 17730
UE9P => PB1 BS 1400 No true casting equivalence! Different mechanical characteristics
ZA4 => CuZn23Al4 NFA 53703 C86200 B271
ZA9 => CC762S CuZn25Al5Mn4Fe3-C EN 1982 C86300 B271

Portfolio

Stainless-steel rotary feeder on a palette Photo taken outside of a large conical ring for gas turbines in stainless steel next to a steel worker Flanged bush after rough machining in the machining workshop Six flanged liners in stainless-steel on a palette