13-8 MO Round Bar Supplier Mumbai for Aerospace and High-Strength Applications

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Table of Contents

  1. What Is 13-8 MO Round Bar?
  2. Why 13-8 MO Is Used for High-Strength Components
  3. 13-8 MO UNS S13800 and Material Standards
  4. 13-8 MO Chemical Composition
  5. 13-8 MO Mechanical Properties
  6. 13-8 MO Heat Treatment and Aging Conditions
  7. 13-8 MO Round Bar Applications
  8. 13-8 MO Round Bar Sizes and Supply Requirements
  9. 13-8 MO Machining Considerations
  10. What Affects 13-8 MO Round Bar Price?
  11. How to Buy 13-8 MO Round Bar for an Industrial Project
  12. 13-8 MO Round Bar Supplier in Mumbai
  13. Frequently Asked Questions
  14. Request a Quote

What Is 13-8 MO Round Bar?

13-8 MO Round Bar is a precipitation-hardening martensitic stainless steel identified by UNS S13800. It is designed for applications that need a combination of high strength, toughness and corrosion resistance.

Carpenter Technology describes 13-8Mo as a precipitation-hardening martensitic stainless steel with high-strength characteristics, fracture toughness, transverse mechanical properties and resistance to stress-corrosion cracking. The alloy is used in aerospace, defence, energy and industrial applications.

The designation 13-8 MO reflects its approximate chromium and nickel levels, while molybdenum is added to the composition to support the alloy’s performance.

The material is especially interesting to engineers because its properties can be changed substantially through controlled aging treatments.

For that reason, purchasing the alloy only by the name “13-8 MO” is not enough. The buyer should also specify the required condition, standard, dimensions and certification.

Why 13-8 MO Is Used for High-Strength Components

Many engineering applications require more than ordinary stainless-steel corrosion resistance.

A component may need to withstand:

  • High mechanical loading
  • Repeated loading
  • Demanding environmental conditions
  • Tight dimensional requirements
  • Corrosive service
  • Weight-sensitive aerospace designs

13-8 MO is valuable because it is a precipitation-hardening stainless steel. The alloy can be supplied and aged to obtain different combinations of strength, ductility and toughness.

Carpenter Technology notes that different low-temperature aging treatments can be used to achieve a wide range of mechanical properties.

That flexibility makes 13-8 MO Round Bar particularly relevant when a standard austenitic stainless bar would not provide the required strength level.

13-8 MO UNS S13800 and Material Standards

For procurement teams, the most important identification is:

Grade: 13-8 MO
UNS: S13800
Material Type: Precipitation-hardening martensitic stainless steel

Commonly referenced specifications for this alloy include:

StandardReference
UNSS13800
ASTM A564Wrought precipitation-hardening stainless steel
ASTM A705Wrought precipitation-hardening stainless steel forgings
AMS 562913-8 Mo stainless steel
AMS 584013-8 Mo alloy specification
ASME SA564Stainless steel precipitation-hardening products
ASME SA705Precipitation-hardening stainless steel forgings

Carpenter Technology lists AMS 5629 and ASTM A564 among the applicable specifications for 13-8Mo. ASM/MatWeb also identifies UNS S13800 with ASTM A564, ASTM A705, AMS 5629 and related specifications.

When placing an order, always state the exact specification applicable to the component.

13-8 MO Chemical Composition

The chemistry of 13-8 MO is designed around a chromium-nickel stainless-steel base with molybdenum and aluminium additions.

Representative composition limits include:

ElementComposition
Chromium (Cr)12.25–13.25%
Nickel (Ni)7.50–8.50%
Molybdenum (Mo)2.00–2.50%
Aluminium (Al)0.90–1.35%
Carbon (C)0.05% max
Manganese (Mn)0.10% max
Silicon (Si)0.10% max
Nitrogen (N)0.01% max
Phosphorus (P)0.01% max
Sulfur (S)0.008% max
Iron (Fe)Balance

These composition ranges are consistent with published 13-8Mo data from ASM/MatWeb and supplier technical references.

For an actual purchase, the Mill Test Certificate should be used to verify the supplied heat against the applicable specification.

13-8 MO Mechanical Properties

One of the biggest advantages of 13-8 MO is that its mechanical properties depend strongly on its aging condition.

For example, published ASM/MatWeb data for UNS S13800 in H950 condition reports an ultimate tensile strength of approximately 1550 MPa. In H1150 condition, published values are approximately 1000 MPa tensile strength and 725 MPa yield strength, demonstrating how strongly the aging condition can influence mechanical performance.

Representative published values include:

ConditionTensile StrengthYield Strength
H950~1550 MPaCondition-specific
H1000~1413 MPa~1310 MPa
H1050~1207 MPa~1103 MPa
H1100~1105 MPa~1035 MPa
H1150~1000 MPa~725 MPa

These figures are reference values from published material data and should not be treated as universal design properties. Exact minimum requirements depend on the specification, product form, dimensions and heat-treatment condition.

For an aerospace or critical industrial project, the certified mechanical properties for the actual supplied material should always control.

13-8 MO Heat Treatment and Aging Conditions

The heat-treatment condition is one of the most important purchasing details for 13-8 MO.

The alloy can be supplied in a solution-treated condition and subsequently age hardened. Carpenter Technology specifically notes that a range of mechanical properties can be achieved through different low-temperature aging treatments.

Common aging designations discussed for 13-8 MO include:

H950
A high-strength aging condition commonly selected where maximum strength is important.

H1000
Provides a different balance between strength and ductility.

H1025 / H1050
Intermediate aging conditions used where a combination of strength and toughness is required.

H1100 / H1150
Lower-strength aging conditions generally associated with improved ductility and toughness compared with the highest-strength conditions.

The exact treatment should be selected according to the governing specification and engineering requirements.

Therefore, a purchase order should not simply say:

13-8 MO Round Bar

It should state the required condition or heat treatment whenever the project specification requires one.

13-8 MO Round Bar Applications

Aerospace Components

13-8 MO is particularly relevant to aerospace applications because high strength, fracture toughness and corrosion resistance can be required simultaneously.

Carpenter Technology identifies aerospace as one of the alloy’s principal application sectors.

Defence Equipment

High-strength stainless materials are used in selected defence components where mechanical performance and environmental resistance are important.

Energy Industry

The alloy is also identified for energy applications, where components may face demanding mechanical and environmental conditions.

Petrochemical Equipment

13-8 MO can be considered for selected components in petrochemical environments where strength and corrosion resistance are required.

Industrial Machinery

Round bar is a useful starting form for machining pins, shafts, fasteners, connectors and other precision components.

Injection Molding Equipment

Published technical references also identify 13-8 MO for selected injection-molding equipment applications.

13-8 MO Round Bar Sizes and Supply Requirements

When purchasing 13-8 MO Round Bar, dimensional requirements can vary considerably from one application to another.

Important specifications include:

Diameter: Required diameter in mm

Length: Standard length or cut-to-length requirement

Condition: Solution treated, aged or specified condition

Surface: Bright, polished, turned, cold drawn or other required finish

Tolerance: According to drawing or purchase specification

Standard: ASTM, AMS, ASME or project-specific standard

Inspection: MTC, PMI, mechanical testing or third-party inspection as required

Manan Steel & Metals currently lists 13-8 MO Round Bars and publishes a diameter range of 14–500 mm and lengths of 2–12 m, together with different finish and tolerance options on its product page.

For custom requirements, provide the final-machined component dimensions along with the starting-bar requirement.

13-8 MO Machining Considerations

13-8 MO should be machined with procedures appropriate to precipitation-hardening stainless steel.

The machining behaviour can change depending on whether the material is in the solution-treated or aged condition.

For production machining, the following factors should be considered:

  • Workholding stability
  • Tool geometry
  • Cutting speed
  • Feed rate
  • Depth of cut
  • Coolant selection
  • Heat generation
  • Work hardening
  • Final dimensional tolerance

It is generally preferable to establish machining conditions from the material supplier’s technical data, tooling manufacturer’s recommendations and actual machine performance instead of applying parameters intended for conventional 304 or 316 stainless steel.

The supplied heat-treatment condition should also be communicated to the machining team.

What Affects 13-8 MO Round Bar Price?

The 13-8 MO Round Bar price depends on the complete specification.

Material Condition

Aged material and material requiring additional treatment can have different processing costs.

Diameter

Large-diameter bars generally involve greater material weight and different processing requirements.

Length

Long stock and cut-to-length requirements affect material utilization and preparation.

Surface Finish

Bright, polished, cold-drawn and precision-ground requirements can produce different prices.

Certification

MTC, chemical analysis, mechanical testing, PMI and third-party inspection requirements may add to the final cost.

Quantity

A production requirement may be priced differently from a small quantity for development or maintenance work.

For this reason, buyers searching for 13-8 MO Round Bar price in Mumbai should provide the full technical requirement rather than requesting a generic price per kilogram.

How to Buy 13-8 MO Round Bar for an Industrial Project

Before contacting a supplier, prepare a short technical purchase specification.

Use this format:

Grade: 13-8 MO

UNS: S13800

Specification: ASTM A564 / AMS 5629 / project requirement

Diameter: ___ mm

Length: ___ mm

Condition: ___

Surface Finish: ___

Quantity: ___ kg / pieces

Testing: ___

MTC: Required / Not Required

Application: Aerospace / Defence / Energy / Petrochemical / Industrial

This makes it much easier for a supplier to understand whether you need standard stock material, cut-length bars or a project-specific requirement.

13-8 MO Round Bar Supplier in Mumbai

For companies searching for a 13-8 MO Round Bar Supplier Mumbai, Manan Steel & Metals lists 13-8 MO Round Bars within its stainless and specialty round-bar product range. The published product information covers different sizes, finishes, tolerances and supply requirements.

You can also review the 13-8 MO Round Bar product page before sending your enquiry.

For an industrial quotation, specify:

13-8 MO / UNS S13800

Required ASTM or AMS standard

Diameter

Length

Heat-treatment condition

Quantity

Surface finish

Testing and documentation

For aerospace, defence and critical engineering requirements, giving the exact standard and condition is especially important.

Frequently Asked Questions

What is the UNS number for 13-8 MO stainless steel?

The UNS designation for 13-8 MO stainless steel is S13800. ASM/MatWeb and Carpenter Technology identify 13-8Mo with UNS S13800.

Is 13-8 MO a precipitation-hardening stainless steel?

Yes. 13-8 MO is a martensitic precipitation-hardening stainless steel. Its strength can be increased through controlled aging treatment.

What is AMS 5629 13-8 MO?

AMS 5629 is one of the aerospace material specifications associated with 13-8 MO / UNS S13800. Carpenter Technology lists AMS 5629 among its applicable specifications.

What is ASTM A564 for 13-8 MO?

ASTM A564 is a specification covering wrought precipitation-hardening stainless steel products. UNS S13800 / 13-8 MO is among the material designations associated with this specification.

Which industries use 13-8 MO Round Bar?

13-8 MO is used in selected aerospace, defence, energy and industrial applications. Published technical references also identify petrochemical and injection-molding applications.

Is 13-8 MO Round Bar available in different heat-treatment conditions?

Yes. Different aging conditions such as H950, H1000, H1025, H1050, H1100 and H1150 are used to obtain different combinations of strength and ductility.

What information should I provide when requesting a 13-8 MO quotation?

Provide the grade, UNS number, applicable ASTM/AMS specification, diameter, length, heat-treatment condition, quantity, finish and certification requirements.

Request a Quote for 13-8 MO Round Bar

Manan Steel & Metals

Shop No. 2, Hira Building, 97 Khetwadi Main Road (Nanubhai Desai Road), Girgaon, Mumbai – 400004, Maharashtra, India

Phone: 7977369869
Email: manansteel@gmail.com
Website: www.manansteel.com

For an accurate quotation, send:

Material: 13-8 MO Round Bar
UNS: S13800
Standard: ASTM A564 / AMS 5629 / Project Standard
Diameter: ___ mm
Length: ___ mm
Condition: ___
Quantity: ___ kg / pieces
Finish: ___
Testing: ___
Application: ___

A complete requirement helps match the quotation to the required 13-8 MO grade, condition, dimensions and documentation.

ASTM A564 – Official ASTM page

Anchor text:
ASTM A564 specification for precipitation-hardening stainless steel

Direct URL:
https://store.astm.org/a0564_a0564m-24.html

2. ASTM A705 – Official ASTM page

Anchor text:
ASTM A705 specification

Direct URL:
https://store.astm.org/a0705_a0705m-21.html

3. Carpenter Technology – 13-8Mo technical information

Anchor text:
13-8Mo technical information from Carpenter Technology

Direct URL:
https://www.carpentertechnology.com/alloy-finder/13-8mo

4. ASM/MatWeb – UNS S13800 material data

Anchor text:
UNS S13800 material data

Direct URL:
https://asm.matweb.com/search/SpecificMaterial.asp?bassnum=mqm138b