17-4 PH Round Bar Sizes, Specifications, ASTM Standards & MTC Guide
Primary Focus Keyword: 17-4 PH Round Bar Sizes
Secondary Focus Keywords: 17-4 PH round bar sizes, 17-4 PH bar sizes, 17-4 PH dimensions, 17-4 PH specifications, 17-4 PH ASTM standard, 17-4 PH round bar specification, UNS S17400 round bar, 17-4 PH MTC, 17-4 PH material certificate, 17-4 PH diameter, 17-4 PH bar length, 17-4 PH Type 630, 17-4 PH round bar supplier India
SEO Title: 17-4 PH Round Bar Sizes, Specifications, ASTM Standards & MTC Guide
Meta Description: Explore 17-4 PH round bar sizes, UNS S17400 specifications, ASTM standards, dimensions, heat-treatment conditions, MTC requirements and buying tips.
URL Slug: 17-4-ph-round-bar-sizes-specifications-astm-mtc
Table of Contents
- 17-4 PH Round Bar Specification Guide
- 17-4 PH Round Bar Sizes
- 17-4 PH Diameter and Length Requirements
- 17-4 PH UNS S17400 and Type 630
- 17-4 PH ASTM Specifications
- 17-4 PH Heat-Treatment Conditions
- 17-4 PH MTC Requirements
- How to Order 17-4 PH Round Bar
- 17-4 PH Round Bar Enquiry Format
- Frequently Asked Questions
17-4 PH Round Bar Specification Guide
17-4 PH round bar is a precipitation-hardening stainless steel product commonly identified as UNS S17400 and Type 630.
For industrial procurement, the material name alone is usually not enough.
A complete specification can include:
- Material designation
- UNS number
- Product form
- Diameter
- Length
- Heat-treatment condition
- Applicable ASTM or other standard
- Surface condition
- Quantity
- Material Test Certificate requirement
This information becomes particularly important when the bar is going to be machined into shafts, valve components, pump parts, fasteners or other engineered components.
For general technical information, buyers can refer to ATI Materials’ 17-4 PH information and the ASTM International standards resource.
17-4 PH Round Bar Sizes
The required 17-4 PH round bar size depends on the final component design and machining allowance.
Industrial enquiries can involve a wide range of diameters.
Examples of enquiry sizes include:
| Example Diameter | Typical Enquiry Description |
|---|---|
| 10 mm | 17-4 PH round bar |
| 15 mm | 17-4 PH round bar |
| 20 mm | 17-4 PH round bar |
| 25 mm | 17-4 PH round bar |
| 30 mm | 17-4 PH round bar |
| 40 mm | 17-4 PH round bar |
| 50 mm | 17-4 PH round bar |
| 60 mm | 17-4 PH round bar |
| 75 mm | 17-4 PH round bar |
| 100 mm | 17-4 PH round bar |
These are illustrative enquiry sizes and should not be interpreted as a guaranteed stock list.
Availability depends on the required diameter, condition, specification, quantity and supply form.
For an exact quotation, buyers should provide the required diameter rather than asking for a general “17-4 PH bar price.”
17-4 PH Diameter and Length Requirements
Diameter
Diameter is one of the first details a supplier needs when preparing a round bar quotation.
For example:
25 mm Dia × 3 metre
is substantially more useful for procurement than simply:
17-4 PH round bar
Length
The buyer should specify whether the requirement is:
- Standard commercial length
- Fixed length
- Cut-to-size
- Saw-cut
- Machining allowance required
If a component requires a fixed finished length, the buyer should also consider whether additional material is required for machining.
Quantity
Quantity can be specified as:
- Number of pieces
- Kilograms
- Metric tonnes
- Total required length
For example:
17-4 PH Round Bar – 50 mm Dia × 3000 mm – 20 Nos
provides a much clearer procurement requirement.
17-4 PH UNS S17400 and Type 630
When searching for this material, buyers may encounter several different identifiers.
| Designation | Identification |
|---|---|
| 17-4 PH | Common commercial name |
| UNS S17400 | UNS material designation |
| Type 630 | Stainless steel designation |
| Precipitation-Hardening Stainless Steel | Material family |
Including UNS S17400 in a purchase enquiry can reduce ambiguity.
It is also useful when searching for technical documents, specifications and material certificates.
However, the applicable product standard should still be confirmed separately.
17-4 PH ASTM Specifications
ASTM standards provide specifications and requirements for different stainless steel products.
The correct standard depends on the product form and intended application.
This is an important procurement point because not every ASTM specification applies to every 17-4 PH product.
Depending on the product and requirement, buyers may encounter standards covering:
- Stainless steel bars
- Forgings
- Plate
- Sheet
- Other product forms
For example, ASTM A564/A564M is a specification covering hot-rolled and cold-finished age-hardening stainless steel bars and shapes.
Always confirm the current edition and exact applicability of the standard before placing an order.
The ASTM A564/A564M information can be used as a starting point for understanding the scope of this standard.
For broader standards research, visit ASTM International.
17-4 PH Heat-Treatment Conditions
A major feature of 17-4 PH is its precipitation-hardening capability.
Therefore, the heat-treatment condition can be an essential part of the specification.
Commonly encountered conditions include:
- H900
- H925
- H1025
- H1075
- H1150
- Other specified conditions depending on the applicable standard
Different conditions produce different combinations of strength, hardness, ductility and toughness.
For example, an engineering drawing may specify:
17-4 PH – UNS S17400 – H900
In such a case, simply supplying generic 17-4 PH without confirming the condition could result in a technical mismatch.
For a detailed explanation of the chemistry and mechanical properties, see our 17-4 PH stainless steel chemical composition and properties guide.
17-4 PH MTC Requirements
A Material Test Certificate (MTC) is commonly requested for industrial metal procurement.
For 17-4 PH round bar, an MTC may provide information such as:
Material Identification
- Material designation
- UNS number
- Heat number
- Product form
Chemical Analysis
The certificate may list the tested chemical composition of the heat.
Mechanical Properties
Depending on the applicable specification and condition, mechanical test results may include:
- Tensile strength
- Yield strength
- Elongation
- Reduction of area
- Hardness
Heat-Treatment Information
The certificate may identify the relevant condition and processing information.
Specification
The applicable ASTM, AMS or other specification can be identified where required.
How to Verify a 17-4 PH MTC
When receiving an MTC, the buyer should compare it with the purchase order.
Check:
1. Material: Is it 17-4 PH / UNS S17400?
2. Heat Number: Does the heat number correspond to the supplied material?
3. Chemistry: Does the analysis meet the specified standard?
4. Mechanical Properties: Are the results appropriate for the specified condition?
5. Heat Treatment: Does the condition match the order?
6. Dimensions: Do the supplied dimensions match the purchase requirement?
7. Standard: Is the correct specification referenced?
This type of document review is especially useful for engineering and quality-controlled procurement.
How to Order 17-4 PH Round Bar
A good purchase enquiry should include all the important technical information in one message.
Recommended Information
Material: 17-4 PH / UNS S17400
Product: Round Bar
Diameter: ___ mm
Length: ___ mm / ___ metre
Quantity: ___ Nos / ___ Kg
Condition: H900 / H1025 / H1150 / Other
Specification: ___
MTC: Required / Not Required
Delivery Location: ___
If the requirement comes from an engineering drawing, the relevant material specification and condition should be copied exactly into the enquiry.
This helps avoid assumptions.
17-4 PH Round Bar Enquiry Format
For example:
Requirement: 17-4 PH Round Bar
UNS: S17400
Diameter: 50 mm
Length: 3 metre
Quantity: 25 Nos
Condition: H1150
MTC: Required
Delivery: Mumbai
Specification: As per purchase requirement
A supplier can then evaluate the requirement based on the requested material, dimensions, condition and documentation.
Manan Steel & Metals supplies 17-4 PH round bar for industrial procurement requirements. Buyers can also visit the dedicated 17-4 PH Round Bar Supplier India page.
17-4 PH Round Bar: Key Procurement Checklist
Before confirming an order, verify:
☑ 17-4 PH / UNS S17400 identification
☑ Required diameter
☑ Required length
☑ Quantity
☑ Heat-treatment condition
☑ Applicable specification
☑ Surface condition
☑ MTC requirement
☑ Delivery location
☑ Inspection requirements, if applicable
This checklist can help reduce specification mismatches between the buyer’s requirement and the supplied material.
Frequently Asked Questions
What are common 17-4 PH round bar sizes?
17-4 PH round bar can be required in various diameters, from smaller engineering sizes to substantially larger bar sizes. Actual availability depends on the supplier, specification, condition and quantity.
What is the UNS number for 17-4 PH?
The UNS designation is S17400.
What is Type 630 stainless steel?
Type 630 is a designation commonly associated with 17-4 PH / UNS S17400 precipitation-hardening stainless steel.
Which ASTM standard is used for 17-4 PH round bar?
The applicable ASTM standard depends on the product form and requirement. ASTM A564/A564M covers age-hardening stainless steel bars and shapes, while other standards may apply to different product forms.
Is H900 the same as H1150?
No. H900 and H1150 are different aging conditions and produce different combinations of mechanical properties.
What information should be included in a 17-4 PH round bar enquiry?
Include the diameter, length, quantity, UNS designation, heat-treatment condition, applicable specification, MTC requirement and delivery location.
Can 17-4 PH round bar be supplied with an MTC?
MTC requirements can be specified when placing the enquiry. The certificate should be reviewed against the required specification and supplied material.
How can I get a quotation for 17-4 PH round bar?
Send the complete technical requirement to Manan Steel & Metals, including size, quantity, condition, specification and delivery location.
Conclusion
Understanding 17-4 PH round bar sizes, specifications, ASTM standards and MTC requirements is important when sourcing material for industrial applications.
The most useful procurement information includes UNS S17400 identification, diameter, length, quantity, heat-treatment condition, applicable specification and certification requirements.
Manan Steel & Metals can review industrial requirements for 17-4 PH round bar based on the specified dimensions and technical requirements.
Manan Steel & Metals
Shop No. 2, Hira Building, 97 Khetwadi Main Road,
Girgaon, Mumbai – 400004, Maharashtra, India
Phone: 7977369869
Email: manansteel@gmail.com
Website: https://www.manansteel.com/