Product Overview
17-4PH / SUS630 / 1.4542 Stainless Steel Round Bar overview
17-4PH / SUS630 / 1.4542 Stainless Steel Round Bar belongs to Stainless Steel and the Precipitation Hardening Stainless Steel catalogue. Use the linked category and series pages to compare adjacent grades, shapes, and processing paths before requesting a quote.
Key Benefits
Selection notes based on available product data
- 17-4PH / SUS630 / 1.4542 is the core PH grade
- 15-5PH supports tighter aerospace and precision component demand
- 17-4PH bar, shaft, billet, or forging supply for machining, heat treatment, and load-bearing components; suitable for precipitation-hardening stainless bar orders where age condition, hardness, and machining allowance are decisive
- Testing support can include EN 10204 MTC review, Chemical composition check, Dimensional inspection.
Technical Specifications
Confirmed and requirement-based information
| Property | Specification |
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| Material family | Stainless Steel |
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| Product category | Precipitation Hardening Stainless Steel |
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| Grade | 17-4PH |
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| Equivalent grades | SUS630 / 1.4542 / UNS S17400 |
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| Standards | ASTM A276/A276M stainless steel bar and shape route |
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| RFQ route | Bars & Forgings |
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| Procurement focus | 17-4PH bar, shaft, billet, or forging supply for machining, heat treatment, and load-bearing components; suitable for precipitation-hardening stainless bar orders where age condition, hardness, and machining allowance are decisive |
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| RFQ data needed | RFQ data should state grade, equivalent standard, shape, size, tolerance, quantity, heat treatment or surface condition, and destination. |
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| Processing plan | Processing plan is driven by Cutting & Welding, Precision Machining, heat treatment scope, certificate level, and export routing. |
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| Packaging | Bar and forging orders can use strapped bundles or crates, end marking, anti-rust wrapping, and heat-number traceability. |
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Material Construction
Supply preparation structure
Base material17-4PH within Stainless Steel
Shape preparationBars & Forgings
Optional processingCutting & Welding / Precision Machining
Export protectionBar and forging orders can use strapped bundles or crates, end marking, anti-rust wrapping, and heat-number traceability.
Recommended Applications
Application fit connected to this product
- Aerospace & DefenseHigh-strength steel, maraging steel, nickel alloys, and precision alloys for demanding structural and precision parts.
- Precision MachinerySpecial alloy bars, plates, pipes, and strips for precision machinery, machined parts, and industrial equipment.
- Oil & GasNickel alloys, duplex stainless steel, and alloy steel for corrosive, pressure, and energy equipment environments.
- Chemical ProcessingCorrosion-resistant nickel alloys and stainless steel for chemical equipment, pipe systems, and process parts.
Customization Options
Quote details that can be confirmed before production
- Bars & Forgings: Round, bright, ground, passivated, hexagonal, custom profile bars, alloy steel forgings, and hot die forged components.
- Cutting & Welding
- Precision Machining
- Cross-reference keywords: SUS630 / 1.4542 / UNS S17400.
- Prioritize product-form standard, surface finish, chloride or acid exposure, PMI, and passivation or pickling requirement.
- Alloy focus: precipitation-hardening stainless bar orders where age condition, hardness, and machining allowance are decisive.
- Procurement route: bar, shaft, billet, or forging supply for machining, heat treatment, and load-bearing components.
Testing & Quality Support
Inspection topics for quote preparation
- EN 10204 MTC review
- Chemical composition check
- Dimensional inspection
- Ultrasonic testing for plate, bar, or forging orders when required by standard or drawing
- Mechanical property verification by product-form standard
- PMI and surface inspection for corrosion-service materials
Documents
Useful resources and document status
- Alloy Grade ComparisonCompare nickel alloys, stainless steel, special steel, and precision alloys by standard, equivalent grade, strength, corrosion resistance, temperature range, and processing route.
- Stainless Steel Grade GuideGuide buyers through duplex, austenitic, martensitic, and ferritic stainless steel grades by corrosion environment, strength, weldability, and available metal shape.
- FAQPractical answers for overseas buyers requesting alloy and special steel stock, processing, certificates, inspection, packing, and delivery.
- Technical data sheetRequest chemistry, mechanical properties, heat treatment condition, dimensional tolerance, PMI scope, and certificate level for this exact grade.
- Material Test Certificate and traceabilityMTC to EN 10204 standards, EN 10204-3.1 support, heat number traceability, and stamped reports can be reviewed before quotation.
