Turbine Housing for Turbochargers | Industrial Component Directory

Product Specifications

Technical details and manufacturing context for Turbine Housing

Definition

Turbine housing is a critical component of a turbocharger that serves as the exhaust gas inlet and containment structure. It channels high-temperature exhaust gases from the engine's exhaust manifold to the turbine wheel, converting exhaust energy into rotational motion to drive the compressor. The housing's internal geometry, particularly the volute shape, optimizes gas flow and pressure distribution for efficient turbine operation. This component is typically manufactured from cast iron, nickel-based superalloys, or austenitic stainless steel, depending on the required temperature and pressure resistance. The turbine housing is designed to withstand extreme thermal and mechanical stresses, with maximum operating temperatures ranging from 950 to 1050 °C and operating pressures from 1.0 to 1.6 MPa. Wall thickness typically ranges from 4 to 8 mm, and the inlet and outlet flange diameters are 60–100 mm and 50–80 mm, respectively. Tolerances are held to ±0.5 mm, and surface roughness is specified as Ra 3.2–6.3 μm. The weight of the housing is typically 2–5 kg, and the burst pressure is rated at 3.0–4.0 MPa. Material grades such as GGG40.3 (ductile iron) are referenced per DIN 1693, and standards like ISO 8062, and ISO 1302 are used for pressure testing, dimensional tolerances, and surface finish verification. For any specific application, it is essential to verify model-specific values and standards with the legal manufacturer or supplier, as these parameters are reference ranges and may vary. The turbine housing's design directly impacts turbocharger efficiency, response, and durability, making it a key factor in engine performance and emissions control.

Working Principle

Exhaust gases enter the turbine housing through the inlet flange and flow through the volute (spiral-shaped passage), accelerating and directing the gases onto the turbine wheel blades. The housing's design creates a pressure differential that forces gases to expand, transferring kinetic energy to rotate the turbine wheel, which is connected via a shaft to the compressor wheel on the opposite side. The volute geometry ensures that the gas velocity and pressure are optimized across the turbine wheel, maximizing energy extraction. The housing also contains the high-temperature gases, preventing leaks and maintaining backpressure. The materials and wall thickness are chosen to withstand thermal fatigue and oxidation, while the flange dimensions and tolerances ensure proper sealing and alignment with the exhaust system. The operating principle relies on the conversion of exhaust gas enthalpy into mechanical work, which drives the compressor to boost intake air pressure.

Common Materials

Cast Iron, Nickel-based Superalloy, Austenitic Stainless Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Maximum Temperature	950–1050 °C	Exceeding may cause creep or oxidation
Material Grade	GGG40.3	Ductile iron for high-temperature strengthDIN 1693
Wall Thickness	4–8 mm	Thinner reduces weight but may crack
Inlet Flange Diameter	60–100 mm	Matches turbocharger inlet
Outlet Flange Diameter	50–80 mm	Matches exhaust pipe
Tolerance	±0.5 mm	Critical for sealing surfacesISO 8062
Surface Roughness	Ra 3.2–6.3 μm	Smoother improves flowISO 1302
Weight	2–5 kg	Affects vehicle fuel efficiency
Burst Pressure	3.0–4.0 MPa	Safety factor of 2–3

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Housing Body
The housing itself: encloses and locates the internal parts and provides the mounting interface.
Volute Part
Spiral-shaped passage that accelerates and directs exhaust gases uniformly onto turbine wheel blades

Material: Cast Iron or Nickel Alloy
Inlet Flange Part
Connection point for exhaust manifold or up-pipe, sealed with gasket

Material: Cast Iron or Steel
Outlet Flange Part
Connection point for downpipe or exhaust system

Material: Cast Iron or Steel
Wastegate Port Part
Bypass passage for exhaust gases to control boost pressure (in internally wastegated designs)

Material: Cast Iron or Steel
Heat Shield Mounting Points Part
Attachment points for thermal insulation shields to protect surrounding components

Material: Cast Iron

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Turbine Housing.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Turbocharger

View system integration details

Manufacturers of Turbine Housing

Manufacturer profiles associated with Turbine Housing.

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Frequently Asked Questions

What materials are commonly used for turbine housings?

Common materials include cast iron, nickel-based superalloys, and austenitic stainless steel. The choice depends on the required temperature and pressure resistance. For high-temperature strength, ductile iron grades like GGG40.3 are referenced per DIN 1693.

What are the typical operating limits for a turbine housing?

Typical operating pressure ranges from 1.0 to 1.6 MPa, and maximum temperature ranges from 950 to 1050 °C. Exceeding these limits may cause creep or oxidation. Always verify with the manufacturer for specific applications.

How is the turbine housing's performance verified?

Performance is verified through standards such as ISO 8062 for dimensional tolerances, and ISO 1302 for surface roughness. These standards serve as procurement references; actual compliance must be confirmed with the supplier.

What are the key dimensions to consider when selecting a turbine housing?

Key dimensions include wall thickness (4–8 mm), inlet flange diameter (60–100 mm), outlet flange diameter (50–80 mm), and tolerance (±0.5 mm). These must match the turbocharger and exhaust system specifications.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 4 bar (58 psi) continuous, 6 bar (87 psi) burst
flow rate:	0.5-5.0 kg/s (1.1-11.0 lb/s) exhaust gas flow
temperature:	Up to 1050°C (1922°F) continuous, 1150°C (2102°F) peak
thermal cycling:	Resistant to rapid temperature changes typical in turbocharger operation

Turbine Housing

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