Shanghai Metal Corporation

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Steam Turbine Blades

Product Type: Precision forged turbine blade (impulse / reaction)

Material Range: 12%Cr steel / Nickel superalloy / Titanium

Length Range: 80 – 1500 mm by stage

Max Service Temp: up to 600°C (HP stage)

Root Type: Fir-tree / Dovetail, balanced sets available

Product Detail | Technical Information | Packaging | More

Product Detail1

Shanghai Metal Corporation is a leading Steam Turbine Blades manufacturer and supplier.

A steam turbine blade is a precision-shaped aerodynamic component that extracts energy from high-pressure, high-temperature steam flow and converts it into rotational mechanical work on the turbine rotor. It is used in thermal power plants, combined-cycle units, industrial cogeneration systems, marine propulsion turbines, and geothermal or biomass steam turbines. Conventional machined blades often suffer from low profil accuracy, weak high-temperature creep resistance, poor root fatigue life, and severe last-stage water-droplet erosion, which reduce turbine efficiency and shorten service intervals. They also cut unplanned downtime from blade failure and lower the cost of imported spare parts for plant operators. Our blades apply 3D twisted aerodynamic profiles, creep-resistant alloy materials, and fir-tree root connections to deliver higher stage efficiency, stable operation under 600°C steam, and reliable long-cycle fatigue performance while controlling vibration and erosion for continuous power generation.

If you want to know more about our turbine components products or Steam Turbine Blades price please feel free to contact us, we will reply you within 24 hours.

1. Twisted aerodynamic airfoil generates lift from steam expansion. Impulse design: larger per-stage pressure drop, compact structure. Reaction design: gradual expansion, higher stage efficiency.

2. Root section fastens blade to rotor disc. Fir-tree root: self-centering, high strength for centrifugal loads; dovetail root for moderate loads.

3. 12%Cr martensitic stainless steel for HP/IP (creep & corrosion resistance). Nickel superalloy for hottest areas; titanium reduces centrifugal weight of long LP last-stage blades. Material selected by stage temperature.

4. Integral/attached shroud seals tip clearance and adds damping. Unshrouded or squealer-tip LP blades save weight. Stellite cladding on LP last-stage leading edge resists wet steam droplet erosion.

5. HP blades: short, high-strength, high temp. IP blades: medium size. LP blades: long, lightweight alloy with erosion protection. Matching geometry and material to stage P&T ensures turbine stability and efficiency.

1. High-Temperature Creep Resistance:12%Cr martensitic steel & nickel superalloy maintain strength up to 600°C. Preserves airfoil shape against thermal deformation and extends service life.

2. Precision Aerodynamic Efficiency:3D twisted, CNC-machined airfoil with tight tolerances. Boosts stage efficiency and cuts steam consumption per kWh.

3. Reliable Fir-tree Root Connection:Optimized multi-serration fir-tree root. Handles heavy centrifugal loads and fatigue for long-term safe operation.

4. Water-Droplet Erosion Resistance:Stellite hard-facing on LP last-stage leading edge. Avoids pitting in wet steam and prolongs blade lifespan.

5. Tight Tolerance & Smooth Finish:ECM + polishing delivers smooth surfaces. Minimizes flow loss and tip leakage, lifting turbine output and consistency.

1.Thermal Power Plant Steam Turbine:Serves HP/IP/LP stages for coal & gas-fired units. High-temp strength and efficiency are critical. Large units use 12%Cr HP blades plus titanium LP last-stage blades for stable output.

2.Combined-Cycle Power Plant HP Steam Turbine:Driven by HRSG, demanding high stage efficiency. Reaction-profile precision blades recommended for IP/LP stages.

3.Industrial CHP / Biomass / Geothermal Turbine；Variable steam conditions with impurities; corrosion resistance vital. 12%Cr blades with coating and matched roots extend life in contaminated steam.

4.Marine Propulsion Steam Turbine:Limited space, vibration-sensitive. Compact reliable root required. Balanced fir-tree blade sets avoid resonance at sea.

5.Nuclear Power Plant Steam Turbine:Large LP long-blade sets for saturated-steam nuclear units. High reliability and wet-steam erosion protection are critical.

Technical Information of Steam Turbine Blades:

Backpressure	kPa	Blocking backpressure	10kPa	14kPa	20kPa	25kPa	30kPa	32kPa	34kPa		Maximum full back pressure
High pressure cylinder exhaust temperature	C	330.3	330.4	331.4	333.1	335.1	336.9	337.6	—338.3		340.2
Main steam flow	kg/h	1025951	1027445	1035859	060268	1083429	1104900	1112992	1120826		1142839
Reheat steam flow	kg/h	865382	866602	873286	892680	911019	927991	934373	940552		957901
Low pressure cylinder exhaust steam dryness	%	93.36	93.2	93.25	94.12	95.02	96.15	96.12	96.39		97.16
Low pressure cylinder exhaust enthalpy	kJ/kg	2417.6	2422	2436.3	2471.3	2501.6	2527.9	2537.4	2546.4		2570.9
Low pressure cylinder exhaust flow	kg/h	668246	673961	686461	709181	728363	745832	752376	758697		776423
Makeup water rate	%	0	0	0	0	0	0	0			0
Final feed water temperature	C	271.8	271.9	272.4	273.8	275.2	276.5	276.9	2774		278.6
Steam turbine characteristic data at TMCR flow rate
Backpressure	kPa	Blocking backpressure	10kPa	14kPa	20kPa	25kPa	30kPa	32kPa		34kPa	Maximum full back pressure
Unit output	MW	356.596	356.246	354.479	348.531	342.164	336.380	334.231		332.182	326.539
Heat consumption of steam turbine generator setvalue	kJ/kWh	8141.9	8149.9	8189.45	8330.1	8485.1	8630.9	8686.4		8740.0	8890.9
Main steam pressure	MPa(a	16.7	16.7	16.7	16.7	16.7	16.7	16.7		16.7	16.7
Reheat steam pressure	MPa(a)	3.799	3.799	3.799	3.799	3.8	3.8	3.8		3.8	3.8
High pressure cylinder exhaust pressure	MPa(a	4.221	4.221	4.222	4.221	4.222:	4.222	4.222		4.222	4.222
Main steam temperature	C	538	538	538	538	538	538	538		538	538
Reheat steam temperature	C	538	538	538	538	538:	538	538		538	538
High pressure cylinder exhaust temperature	C	338.9	338.9	338.9	338.9	338.9	338.9	338.9		339.0	339.0
Main steam flow	kg/h	1128783	1128783	1128783	1128783	1128783	1128783	1128783		1128783	1128783
Reheat steam flow	kg/h	946761	946761	947063	946788	946800	946810	946803		946807	946831
Low pressure cylinder exhaust steam dryness	%	93.24	93.04	93.0	93.75	94.75	95.67	96.01		96.34	97.25
Low pressure cylinder exhaust enthalpy	kj/kg	2414.7	2418.3	2430.3	2462.4	2495.1	2524.3	2535.0		2545.2	2573.1
Low pressure cylinder exhaust flow	kg/h	723945	729246	737639	747358	753789	759287	761286		763193	768440
Makeup water rate	%	0	0	0	0	01	0	0		0	0
Auxiliary machine cooling water temperature	C	-	-	-	-	-	-	-		-	-
Final feed water temperature	C	277.8	277.8	277.9	277.8	277.8	277.8	277.8		277.8	277.8

Packaging of Steam Turbine Blades:

Standard Packaging

Each turbine blade is wrapped with VCI anti-rust paper; thick foam protects airfoil, root and blade edges against impact. Blades (single or grouped) are secured in custom segmented wooden trays for positioning and vibration control, visible inside half-opened crates.

Units are packed into IPPC-marked fumigated reinforced export wooden crates reinforced with steel strapping. Crates are stacked on fumigated wooden pallets and wrapped with stretch film. Outer crates carry shipping marks, item numbers, quantity and dimension labels. Packaging is finished in a clean workshop.

Shipping

We offer FCL/LCL sea freight, air freight and international express, selected per cargo quantity, volume, gross weight and destination. Applicable trade terms: EXW, FOB, CIF. Other terms available upon request. Freight is calculated by actual volume, gross weight, destination and transport mode. Shipping documents: packing list, commercial invoice, bill of lading and IPPC fumigation certificate.

Lead Time

Sample orders: 15–20 working days

Standard batch orders: 60–70 working days

Customized dimension & material orders: 70–80 working days

Q1. Can your steam turbine blades be adapted for retrofitting old turbine units?

A:Yes. We can manufacture blades according to your original drawings or reverse-engineer samples to match existing turbine housings for unit upgrade and retrofit projects.

Q2. What heat treatment processes are applied to these turbine blades?

A:We conduct solution treatment, aging and stress relief as required. Heat treatment parameters are matched to the specified alloy material for stable mechanical performance.

Q3. Are material test certificates supplied together with the turbine blade shipment?

A:Certainly. Full MTC material test certificates, dimensional inspection reports and heat treatment records will be provided before or together with delivery.

Q4. What surface protection options are available for steam turbine blades?

A:We offer shot peening, anti-corrosion coating and polishing services to improve erosion resistance, reduce surface stress and extend service life under wet steam conditions.

Q5. What inspection tests will be carried out before blade delivery?

A:We perform dimensional checking, UT/MT non-destructive testing, hardness testing and visual inspection. All tests comply with relevant power industry standards.

Case Study

Products & Service

Steam Turbine Blades

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