Machine Shafts Services for Industrial Projects
Basic Description
Sagiant Piping Industries manufactures precision machine shafts, transmission shafts, pump and motor shafts to drawing-based requirements in carbon steel, alloy steel, stainless steel, duplex and nickel alloys to ASTM A276, A479, A322 and EN 10083. Shafts are turned, ground and polished from cold-finished or forged bar to tight tolerance (h6–h9), heat-treated to the required hardness, with full heat traceability, EN 10204 3.1/3.2 certificates, PMI, hardness and dimensional inspection.
Machine Shafts — grades, tolerances and standards
Precision machine shafts in every grade — materials, tolerances, heat treatment, standards and mechanical data on one page.
Technical Specification
| Parameter | Specification |
|---|---|
| Types | Transmission, pump, motor, gearbox, agitator & custom shafts |
| Materials | Carbon, alloy, stainless, duplex, nickel alloys |
| Diameter | 10 mm – 400 mm |
| Tolerance | h6 – h9 (ground); per drawing |
| Heat Treatment | Q&T, induction/case hardening, nitriding (as specified) |
| Testing & Docs | PMI, hardness, dimensional, MTC EN 10204 3.1/3.2, TPI |
Manufacturing Process & Process Notes
Machine shafts are machined from cold-finished or forged bar by turning, then heat treated (quench-and-temper, induction or case hardening, or nitriding) to the required core and surface hardness, and finish ground/polished to drawing tolerance. Keyways, splines, threads and shoulders are cut to specification and inspected.
Grades & Materials Supplied
| Material Family | Grades (full list) | Applicable Standard | Service / Notes |
|---|---|---|---|
| Carbon steel | AISI 1018, 1020, 1045, A36, C45 | ASTM A29 / A36 / A108 | General machining & structural bars |
| Free-cutting | AISI 1215, 12L14, SS 303, 303Se | ASTM A108 / A582 | High-speed automatic machining |
| Alloy steel | AISI 4140, 4340, 8620, 4150; EN8, EN19, EN24, EN36 | ASTM A322 / A331 | High-strength shafts, gears, bolting |
| Stainless (austenitic) | 304, 304L, 304H, 309, 310, 316, 316L, 316Ti, 317L, 321, 347 | ASTM A276 / A479 / A484 | Corrosion & high-temperature service |
| Stainless (mart./ferritic/PH) | 410, 416, 420, 430, 431, 440C, 17-4PH (630), 15-5PH | ASTM A276 / A564 | Wear, hardness, shafts, springs |
| Duplex / super duplex | 2205 (S31803/S32205), 2507 (S32750), S32760, S32550 | ASTM A276 / A479 | Chloride, sour & high-strength service |
| Nickel / Monel | Nickel 200/201, Monel 400, Monel K500 | ASTM B160 / B164 | Caustic, HF acid & marine service |
| Inconel / Incoloy | 600, 601, 625, 718, X-750, 800/800H, 825 | ASTM B166 / B446 / B637 / B408 / B425 | High-temperature & severe corrosion |
| Hastelloy / Alloy 20 | C-276, C-22, B-2, B-3, Alloy 20 (N08020) | ASTM B574 / B473 | Aggressive acid & chemical service |
| Titanium | Grade 2, Grade 5 (6Al-4V) | ASTM B348 | Light-weight, chloride / oxidising service |
Standards & Specifications
| Scope | Applicable Standards |
|---|---|
| Shaft bar stock | ASTM A276 / A479 / A322; EN 10083 |
| Cold-finished bar | ASTM A484; EN 10277 |
| Tolerance | ISO h6 – h9 (ground) |
| Heat treatment | Per drawing / ASTM A322 |
| Sour service | NACE MR0175 / ISO 15156 |
Mechanical Properties (representative grades)
| Grade | Tensile (MPa, min) | Yield (MPa, min) | Elong (%, min) | Hardness (max) |
|---|---|---|---|---|
| AISI 1045 | 585 | 450 | 12 | 170 HB (ann.) |
| AISI 4140 (Q&T) | 655–980 | 415–850 | 12 | 197–277 HB |
| SS 304 / 304L | 515 / 485 | 205 / 170 | 40 | 201 HB |
| SS 316 / 316L | 515 / 485 | 205 / 170 | 40 | 217 HB |
| SS 410 (ann.) | 450 | 205 | 20 | 217 HB |
| 17-4PH (H1075) | 1000 | 860 | 12 | 311–375 HB |
| Duplex 2205 | 655 | 450 | 25 | 293 HB |
| Super duplex 2507 | 795 | 550 | 15 | 310 HB |
| Inconel 625 | 827 | 414 | 30 | — |
| Monel 400 | 480 | 170 | 35 | — |
Testing, Inspection & Documentation
| Test / Document | Detail |
|---|---|
| PMI | Positive material identification on alloy, stainless & nickel grades |
| Mechanical | Tensile, yield, elongation, hardness, impact (where required) |
| Corrosion (SS/duplex) | IGC per ASTM A262 Practice E; ferrite check (duplex); pitting (G48) |
| Dimensional / surface | Thickness, width, flatness, tolerance & surface-finish check |
| Certification | EN 10204 3.1 / 3.2 mill test certificate; NACE MR0175 where required |
Applications & Industries Served
Available Forms, Sizes & Range
Made to order from drawing. Share length, diameter(s), grade, hardness, tolerance and keyway/spline detail with drawing.
| Item | Size Range | Wall / Thickness / Rating | Standard |
|---|---|---|---|
| Turned & ground shaft | 10 mm – 250 mm dia | h6 – h9 | Per drawing / A479 |
| Forged shaft (large) | 150 mm – 400 mm dia | Machining allowance | ASTM A668 |
| Induction-hardened shaft | 20 mm – 200 mm dia | Surface 50–60 HRC | Per drawing |
| Stainless shaft | 10 mm – 200 mm dia | h7 – h9 | ASTM A276 / A479 |
Frequently Asked Questions
What materials are machine shafts made from?
Carbon (1045), alloy (4140/4340/EN19/EN24), stainless (304/316/410/431/17-4PH), duplex and nickel alloys — selected for strength, wear and corrosion needs.
What tolerance can you hold on shafts?
Ground shafts are typically held to h6–h9 per drawing; tighter tolerances and surface finishes are available on request.
Can shafts be heat-treated and hardened?
Yes — quench-and-temper for core strength, plus induction/case hardening or nitriding for wear-resistant surfaces, certified by hardness testing.
Do you machine keyways and splines?
Yes — keyways, splines, threads, shoulders and bores are machined to the supplied drawing and dimensionally inspected.
Scope of Work
The machine shafts scope can include project review, fabrication support, dimensional coordination, inspection documentation and dispatch support for industrial installations.
Applications
For related project work, review Custom Fabrication, Contact Sales or for technical assistance.
Types of Products
| Type | Description |
|---|---|
| Fabricated Assemblies | Built as per drawing and site requirement |
| Sheet Metal Products | Doors, dampers, diffusers and HVAC items |
| Tanks / Skids | Prefabricated tanks and supporting assemblies |
| Custom Items | Project-specific metal fabrication |
Available Forms
Related Pages
From requirement to dispatch
A drawing-led, inspection-backed process for engineered and fabricated supply — the same discipline on every project.
- 01
Requirement Review
Drawing, BOQ, specification and project scope reviewed to confirm feasibility.
- 02
Design & Specification
Material, method, tolerance and finish aligned to the applicable standard.
- 03
Fabrication Planning
Production planned with inspection and test points built into the sequence.
- 04
Inspection & QA
Dimensional and visual inspection against drawing, with documentation as required.
- 05
Packing & Dispatch
Tagging, packing and dispatch documentation for on-time project delivery.
Frequently Asked Questions
What materials does Sagiant Piping Industries supply?
Sagiant Piping Industries can supply stainless steel, carbon steel, alloy steel, duplex, super duplex and nickel alloy products subject to project requirement.
Do you provide MTC and test certificates?
MTC, test certificates, heat number traceability and inspection documents can be coordinated based on the material, standard and project scope.
Can Sagiant supply as per project BOQ?
Yes. The team can review BOQs, line lists, drawings and specifications to support pipes, fittings, flanges, fasteners and fabricated items.
Do you support third-party inspection?
Third-party inspection, PMI and dimensional inspection support can be arranged when required by the enquiry or project documentation.
Can you work from drawings or site requirements?
Engineering and fabrication enquiries can be reviewed from drawings, BOQs, approved samples or project specifications.
Do you provide custom fabrication services for industrial projects?
Custom fabrication support is available for industrial assemblies, tanks, duct accessories, clean room items and project-specific metal works.
A controlled path from requirement to delivery support
A technical RFQ flow built for engineers, QA teams and project buyers who need clear standards, traceability and dispatch documentation.
Requirement Submission
Share product, grade, size, class, quantity, drawing and delivery location.
Technical Review
Review standards, specifications, missing inputs and service conditions.
Material Selection
Align stainless, carbon, alloy, duplex, titanium or nickel alloy grades.
Quotation & Approval
Confirm commercial scope, documents, inspection needs and timelines.
Production / Sourcing
Coordinate manufacturing, stock sourcing or fabrication as per scope.
Quality Inspection
Manage dimensional checks, MTC review, PMI or third-party inspection.
Dispatch & Documentation
Prepare packing, tagging, test certificates and dispatch documents.
Delivery Support
Support delivery coordination, document handover and project closure.
Find the right product path
Choose what you need and jump directly to the correct product, material or engineering section.
304/L, 316/L, 321, 347 and 904L for corrosion-resistant piping, fittings, flanges and fabrication.
View stainless steelASTM A106, A53, A105, API 5L and IS 2062 for pressure, utility and structural supply.
View carbon steelUNS S31803, S32205, S32750 and S32760 for chloride, offshore and desalination service.
View duplex gradesInconel, Monel, Hastelloy, Incoloy and Nickel 200/201 for severe corrosion and heat service.
View nickel alloys