What Makes Ganpat Industrial Corporation The Go-To Name For AISI 4130 Round Bar ?
Quote Inside 24 Hours
Send dia, length and quantity before 6 PM IST for next-morning pricing
Heat-Traceable Chromoly Steel
Every bar carries a heat number back to the mill test certificate
Bright, Black & Forged Bars On Rack
Multiple diameters and finishes held ready in Mumbai stock
Same-Week Dispatch
Rack sizes leave Mumbai within 5 working days of PO release
Zero Rejection Cost
Chemistry, hardness and dimensional checks cleared before the box is strapped
AISI 4130 Round Bar Data
- 1Material Basis: Chromium-Molybdenum Low Alloy Steel • UNS G41300 • AISI/SAE 4130
- 2Governing Standards: ASTM A29 (General Requirements) • ASTM A322 & A331 (Chemical Requirements) • AMS 6350 / 6346
- 3Size Range: AISI 4130 Rods 5 mm to 500 mm dia • Flat 3 mm to 150 mm thick • Hex & Square 5 mm to 150 mm
- 4Alloying: 0.80-1.10% Chromium • 0.15-0.25% Molybdenum • 0.28-0.33% Carbon
- 5Equivalents: DIN/EN 1.7218 (25CrMo4) • JIS SCM430 • BS 708A25 • China GB 30CrMo
- 6Forms Supplied: Round, Flat, Hex, Square, Threaded & Forged Bar Ex-Stock Mumbai
Mumbai works desk • WhatsApp +91 85912 64209 • Size-wise pricing on every enquiry
Ganpat Industrial Corporation is trusted AISI 4130 Steel Round Bar stockist based in Mumbai. Our range includes AISI 4130 Flat Bar for structural and machining applications. We supply AISI 4130 Steel Hexagonal Bar sections against ASTM A29 norms. Stocks of Annealed 4130 Hex Bar are held for immediate despatch. We offer SAE 4130 Bright Bar with smooth, precision-ground surfaces. Our ASTM AISI 4130 Rounds meet ASTM A322 and A331 chemical limits. Alloy Steel AISI 4130 Bar carries 0.80-1.10% chromium and 0.15-0.25% molybdenum. We manufacture Cr-Mo Alloy Steel AISI 4130 Rod for heat-treatable applications. AISI SAE 4130 Threaded Bar is available in custom thread specifications. Chrome Moly AISI 4130 Rods respond well to heat treatment processes. UNS G41300 Round Bars are traceable to original heat chemistry.
Mumbai · Chromium-Molybdenum Chromoly Bar Stockist & Exporter
High Tensile Strength 4130 Chromoly Flat Bar Supplier in India in Annealed and Hardened Condition
Ganpat Industrial is a size-wise pricing AISI 4130 Round Bar Supplier in India. We stock UNS G41300 rod and 4130 Chromoly Flat Bar from 5 mm to 500 mm with full EN 10204 3.1 traceability.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓Petrofac Approved
UNS Designation
G41300
AISI / SAE 4130
Density
7.85 g/cm³
0.284 lb/in³
Carbon Content
0.28 – 0.33%
Weldable low-carbon alloy grade
Round Bar Range
5 – 500 mm
Hot rolled, forged & cold drawn
Specification Of AISI 4130 Round Bar
An expert AISI 4130 Round Bar Manufacturer in India guarantees optimal tensile strength.
4130 Round Bar Material Basis
- Chromium-Molybdenum Low Alloy Steel
- Medium Carbon, 0.28-0.33% C
- UNS G41300
- SAE / AISI 4130 Grade
Governing Bar Standards
- ASTM A29 / A29M General Requirements
- ASTM A322 & ASTM A331 Chemical Req.
- AMS 6345 / 6346 / 6350 / 6371
- SAE J404 & SAE J412
AISI 4130 Steel Round Bar Size Range
- 5mm to 500mm Diameter
- 3/16″ to 20″ equivalent diameter
- Custom lengths cut-to-size
- Above 500mm quoted on request
AISI 4130 Flat Bar & Section
- Round Bar & Rods
- Bright, Black & Peeled Finish
- Hex & Square Bar On Request
- 4130 AISI Forged Bars & Blocks
Delivery Condition
- Annealed & Cold Drawn Bar
- Normalized On Request
- Bright / Black Finish
- Rough Turned On Request
Production Route
- Hot Rolled / Forged From Billet
- Cold Drawn AISI 4130 Round Bar
- Annealing & Normalizing Heat Treatment
- Centreless Ground To Size
Testing Offered
- Chemical / Spectro Analysis
- Tensile, Yield & Hardness Test
- Ultrasonic & Straightness Check
- Third Party Inspection
Matching Products
- AISI 4140 Round & Flat Bar
- 4130 Forgings & Fasteners
- 4130 Seamless Tube
- 4130 Sheet & Plate
Packing
- Bundled With Grade Tags
- VCI / PVC Wrap For Bright Bar
- Fumigated Wooden Crates
- Anti-Rust Oil Coating
Types Of Alloy Steel AISI 4130 Bar We Supply
AISI 4130 Round Bar
Round Section
Alloy Steel 4130 Flat Bar
Flat Section
AISI 4130 Steel Hexagonal Bar
Hex Section
AISI SAE 4130 Threaded Bar
Threaded
AISI UNS G41300 Bright Bar
Peeled & Polished
SAE 4130 Alloy Steel Black Bar
Hot Rolled / Black
4130 AISI Forged Bars
Forged Blank
Alloy Steel AISI 4130 Cold Drawn Round Bar
Cold Drawn
Need AISI 4130 Rods Above 400 mm?Mail the diameter and length for large sizes. 4130 AISI Forged Bars are quoted the same day.
AISI 4130 Steel Round Bar Size Chart
A typical stock range held by an established alloy bar stockist in India for severe-duty applications.
| Section | Size Range | Typical Length |
|---|---|---|
| AISI 4130 Steel Round Bar (Rod) | 5 mm – 500 mm dia | 3 – 6 metre, custom cut |
| Alloy Steel 4130 Flat Bar | 10 mm x 3 mm – 300 mm x 150 mm | 3 – 6 metre |
| AISI 4130 Steel Hexagonal Bar | 5 mm – 100 mm A/F | 3 – 6 metre |
| Alloy Steel AISI 4130 Round Bars (Square) | 5 mm – 150 mm side | 3 – 6 metre |
| 4130 AISI Forged Bars / Block | Up to 500 mm block, custom | As drawing |
AISI 4130 Steel Hexagonal Bar Tolerance
| Dia Range (mm) | h9 | h10 | h11 | j9 / k9 |
|---|---|---|---|---|
| 5 – 6 | 0.030 | 0.048 | 0.075 | ±0.015 |
| 6 – 10 | 0.036 | 0.058 | 0.090 | ±0.018 |
| 10 – 18 | 0.043 | 0.070 | 0.110 | ±0.022 |
| 18 – 30 | 0.052 | 0.084 | 0.130 | ±0.026 |
| 30 – 50 | 0.062 | 0.100 | 0.160 | ±0.031 |
| 50 – 80 | 0.074 | 0.120 | 0.190 | ±0.037 |
| 80 – 120 | 0.087 | 0.140 | 0.220 | ±0.044 |
4130 Chromoly Flat Bar Chemical Composition
This AISI 4130 Round Bar Supplier in India stocks materials for high-stress applications.
IronFe
Balance
ChromiumCr
0.80 – 1.10%
ManganeseMn
0.40 – 0.60%
CarbonC
0.28 – 0.33%
SiliconSi
0.15 – 0.30%
MolybdenumMo
0.15 – 0.25%
PhosphorusP
0.035% max
SulphurS
0.040% max
Heat Treatment Of Alloy Steel AISI 4130 Bar
From Soft Bar To Ready-To-Machine Stock
Chromium and molybdenum give Alloy Steel AISI 4130 Bar strong hardenability across every route below.
Annealing
Heated to 843°C, air cooled at 482°C for the softest, most ductile condition
Normalizing
Heated to 899-927°C and air cooled for uniform grain refinement
Hardening
Heated to 871°C then oil quenched to raise strength and hardness
Tempering
Reheated 399-566°C to balance strength against toughness
Cold Drawing
Alloy Steel AISI 4130 Cold Drawn Round Bar sized to close tolerance after heat treatment
ASTM AISI 4130 Rounds Mechanical Properties
Annealed Condition, Typical Values
The soft, ductile condition used for machining and cold forming before any further heat treatment.
Tensile Strength
500 – 620 MPa
73 – 90 ksi, annealed
Yield Strength
320 – 400 MPa
46 – 58 ksi, annealed
Elongation
22 – 34%
In 50 mm gauge length
Hardness
148 – 164 HB
Annealed condition
Normalized Condition (870°C, Air Cooled), Typical Values
A moderate strength boost over annealed bar without the distortion risk of full quench and temper.
Tensile Strength
~670 MPa
~97 ksi, normalized
Yield Strength
~435 MPa
~63 ksi, normalized
Elongation
~25.5%
In 50 mm gauge length
Hardness
~207 HV
Approx. 196 HB
Physical Properties Of AISI 4130 Steel Bar
Choose a reliable AISI 4130 Round Bar Supplier in India for aerospace-grade materials.
Density
7.85 g/cm³
0.284 lb/in³
Melting Point
1432°C
2610°F approx
Modulus Of Elasticity
190 – 210 GPa
At room temperature
Thermal Conductivity
42.7 W/m·K
At 100°C
Shear Modulus
~80 GPa
Typical for alloy steel
Bulk Modulus
~140 GPa
Typical for alloy steel
Poisson’s Ratio
0.27 – 0.30
Room temperature
Machinability
~70%
Annealed & cold drawn, vs AISI 1212 = 100%
UNS G41300 Round Bars Equivalent Grades
ASTM / UNS / SAE
- ASTM A29 / A322 / A331 UNS G41300
- SAE J404 & SAE J412
- AMS 6345, 6346, 6348, 6350, 6371
DIN / EN / Werkstoff
- DIN / Werkstoff 1.7218
- EN 25CrMo4
- Close Chemistry Match To UNS G41300
JIS / BS / China GB
- JIS G4105 SCM430
- BS 708A25 / 708M25
- China GB/T 3077 30CrMo
AFNOR
- AFNOR 25CD4
- Matches EN 1.7218 Basis
- Confirmed On Order
Nearby AISI Grades
- AISI 4140 (Higher Carbon, Higher Strength)
- AISI 4340 (Nickel-Chrome-Moly)
- AISI 8630 (Lower Alloy Content)
Indian Market Note
- No Single-Number BIS Equivalent
- Ordered Directly As 4130 / G41300
- Compared By Chemistry Basis
AISI 4130 vs AISI 4140 Chromoly Bar
Buyers often weigh 4130 against 4140 on the same enquiry. Here is how the two chromoly grades split.
AISI 4130 Round Bar
- 0.28-0.33% carbon, lower than 4140
- Easier to weld without pre-heat on thin section
- Good ductility and toughness in annealed state
- Preferred for tubing, aircraft mounts, roll cages
AISI 4140 Round Bar
- 0.38-0.43% carbon, higher hardenability
- Needs pre-heat control on thicker welds
- Higher attainable strength after Q&T
- Preferred for shafts, gears, high-load fasteners
4130 AISI Forged Bars Manufacturing Process
From Billet To Certified Bar
A quick look at how UNS G41300 billet becomes a finished, traceable AISI 4130 Round Bar.
Forging / Hot Rolling
Billet reduced at 954-1204°C to round, flat, hex or square section
Normalizing
Air cooled from 899-927°C to refine grain structure
Cold Drawing / Peeling
Bright, hex and peeled bar sized to close tolerance
Inspection
Chemistry, hardness, straightness and dimensional checks cleared
Dispatch
Tagged and shipped with EN 10204 3.1 certificate
Cr-Mo Alloy Steel AISI 4130 Rod Application Industries
Where Weldability Meets Strength
Wherever a fabricator needs an easily-welded, heat-treatable bar, AISI 4130 Rods go on the BOM.
Aircraft Engine Mounts & Frames
Oil & Gas Downhole Tooling
Automotive Roll Cages & Chassis
Welded Mechanical Tubing
Pressure Vessel Fittings
Pump & Valve Shafting
Structural Fasteners & Studs
General Machine Shafts & Gears
Alloy Steel AISI 4130 Round Bar Weight Chart
Weight per metre calculated at 7.85 g/cm³ density for common rack diameters.
| Dia (mm) | Kg / Metre | Dia (mm) | Kg / Metre |
|---|---|---|---|
| 10 | 0.62 | 100 | 61.65 |
| 16 | 1.58 | 125 | 96.33 |
| 20 | 2.47 | 150 | 138.71 |
| 25 | 3.85 | 200 | 246.62 |
| 32 | 6.31 | 250 | 385.34 |
| 40 | 9.86 | 300 | 554.85 |
| 50 | 15.41 | 500 | 1541.25 |
AISI 4130 Round Bar Price In India
Size-Wise Pricing, Not A Flat Rate Card
4130 pricing tracks base alloy steel billet rates plus the day’s chromium and molybdenum ferro-alloy cost. These are the factors we consider.
Send a size-wise quantity list for per-kg pricing. Get it inside 24 hours. HSN and GST are already worked out.
Stock, MOQ & Dispatch Timeline
From Enquiry To Gate Pass
The real clock on an AISI 4130 Round Bar order, not a marketing promise.
Day 0 – Enquiry
Mail diameter, length, condition and quantity to our Mumbai desk
Day 1 – Size-Wise Quote
Per-kg rate against base steel and alloy surcharge, HSN and GST included
Day 3 – Inspection
Chemistry, hardness and dimensional checks cleared, TPI called if needed
Day 5 – Dispatch
Rack sizes leave with LR copy and full document set
Rack Stock
10 – 100 mm Dia
Round, hex and flat held in Mumbai
Minimum Order
200 Kg
Per size, trial lots considered
Large Dia Lead Time
20 – 25 Days
Above 200mm, indented against order
Export Transit
Nhava Sheva
Air or sea, FOB CFR CIF DDP quoted
Annealed 4130 Hex Bar Testing
A serious AISI 4130 Round Bar Supplier tests every heat before dispatch, and backs it with full paperwork.
Chemical / Spectro Analysis
Reading checked against UNS G41300 composition limits
Hardness Test
Brinell / Rockwell readings recorded lot wise per condition
Tensile & Yield Test
Tensile, yield and elongation tested against the ordered condition
Ultrasonic Test
Internal soundness screened per ASTM A388 on request
Dimensional Inspection
Diameter, straightness and length checked against tolerance
Third Party Inspection
SGS, BV, TUV or Lloyd’s arranged before dispatch
4130 AISI Forged Bars Documentations
Every consignment of AISI 4130 Rods travels with a full paper trail, not just a delivery challan.
Mill Test Certificate
EN 10204 3.1 as standard, 3.2 with TPI witness
Every Order
Certificate Of Conformance
Confirms chemistry and condition match the PO
Every Order
Packing List & Certificate Of Origin
Bundle-wise weight and origin detail for customs
Export Orders
Third Party Inspection Report
SGS, BV, TUV or Lloyd’s report on request
On Request
Packaging Of AISI 4130 Bright Bar
Packing is matched to finish so 4130 AISI Black Bar and bright bar both reach site without surface damage.
Anti-Rust Oil Coating
Applied to bright and cold drawn bar before wrapping
VCI / PVC Wrap
Vapour corrosion inhibitor wrap for sea freight moisture
Bundling & Grade Tagging
Heat number, grade and size tag on every bundle
Fumigated Wooden Crates
Export-grade crating for hex, threaded and forged bar
AISI 4130 Round Bar Frequently Asked Questions
What is AISI 4130 grade steel Rod?
A chromium-molybdenum low alloy steel, UNS G41300, with 0.28-0.33% carbon and good weldability.
Are SAE 4130 and AISI 4130 the same?
Yes, SAE and AISI publish the same 4130 chemistry; the two names are used interchangeably in the trade.
What are the properties of AISI 4130 Steel Bar?
Good weldability, moderate as-annealed strength, and strong response to normalizing and quench-and-temper.
What is ASTM AISI 4130 Rounds good for?
Aircraft engine mounts, welded tubing, roll cages, oilfield tooling and general machine shafting.
What is the density of 4130 AISI Forged Bars?
7.85 g/cm³ (0.284 lb/in³), the same as most carbon and low alloy steels.
What is the HSN code for AISI 4130 Round Bar?
HSN 7228, taxed at 18% GST in India.
6 Reasons to choose Ganpat Industrial Corporation
- Distributor of Heat Exchanger parts and Alloys for High Temperature applications.
- Stockholder and importer of Ferrous and non ferrous metals.
- Wide stock of prime quality austenitic and Ferritic Stainless Steel for Extreme pressure environment.
- Marine grade steel at lowest price in Mumbai.
- Compare Price per KG in India and China.
- Offer Resale price to local suppliers, traders and wholesalers in UAE, Saudi Arabia, Egypt, and USA