AMS 5630 Stainless Steel 440C Round Bar Supplier
Multinox Inc — The Hardest Stainless Ever Made — AMS 5630 Stainless Steel 440C Round Bars Certified to UNS S44004, Stocked & Shipped Worldwide.
Available Forms & Types
Most Common
Round Bars
Cold drawn, centreless ground & polished. Used in shafts, fasteners, machined components.
- OD: 4mm to 500mm
- Bright / Polish / Black finish
- Length: 1–6 metres
Precision
Hex Bars
Across-flat 18mm–57mm. Ideal for bolt, nut & valve body machining applications.
- 18mm – 57mm A/F
- Cold drawn condition
- Non-magnetic grade
Structural
Square Bars
Used in structural fabrication, tooling and engineering. Custom sizes available.
- 18mm – 47mm
- Bright / Rough Turned
- Custom sizes on request
Wide Range
Flat Bars
Width ½" to 10", thickness 2mm to 150mm. Sheared & edged or hot-rolled condition.
- Width: ½" to 10"
- Thickness: 2–150mm
- Custom width available
Hollow
Hollow Bars
Seamless hollow bar for bushings, sleeves & valve bodies. Saves machining time.
- OD: 4mm to 100mm
- Various wall thickness
- Centreless ground
High Strength
Forged Bars
Hot forged for superior grain structure. Heavy-duty industrial and aerospace use.
- 15mm to 300mm
- Ultrasonic tested
- Rough turned finish
UNS S44004 Round Bar — Specifications
From 10mm to 250mm diameter, AISI 440C Round Bars ship ground, turned or black with UNS S44004 traceability.
| Product | AMS 5630 Stainless Steel 440C Round Bar |
| Specifications | AMS 5630, ASTM A276, ASTM A479 |
| Dimensions / Standards | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| UNS S44004 Round Bars | Outside Diameter: 4 mm to 500 mm |
| SUS 440C Round Bars | Outside Diameter: 4 mm to 100 mm |
| 1.4125 Hex Bars | 18 mm – 57 mm (11/16" – 2-3/4") |
| DIN 1.4125 Square Bars | 18 mm – 47 mm (11/16" – 1-3/4") |
| UNS S44004 Flat Bars | 1/2" to 10" Width, 2 mm to 150 mm Thickness |
| Finish | Black, Bright Polished, Rough Turned, No.4 Finish, Matt Finish, BA Finish |
| Length | 1 to 6 Meters, Custom Cut Lengths |
| Form | Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging, etc. |
WNR 1.4125 Round Bar Chemical Composition chart
During heat treatment, chromium carbides form inside UNS S44004 Round Bars — invisible armour against wear at every contact point.
C
0.95 – 1.20%
Carbon
Mn
1.00 max
Manganese
Si
1.00 max
Silicon
P
0.040 max
Phosphorus
S
0.030 max
Sulphur
Cr
16.00 – 18.00%
Chromium
Mo
0.75 max
Molybdenum
Ni
1.00 max
Nickel
Equivalent Grades of AMS 5630 Stainless Steel 440C Round Bar
With internationally mapped equivalents, Stainless Steel 440C Round Bars clears specifications and customs without a single query.
AMS
5630
AMS Standard
AISI
440C
AISI
UNS
S44004
UNS
WNR
1.4125
Werkstoff / DIN
JIS
SUS 440C
Japanese Standard
Check UNS S44004 Round Bar Mechanical Properties
Stainless Steel 440C Round Bars hold razor edges and bearing loads alike — hardness and toughness balanced by precise heat treatment.
| Property | Value |
|---|---|
| Density | 7.80 g/cm³ |
| Melting Point | 1483°C |
| Tensile Strength | 1965 MPa |
| Yield Strength (0.2% Offset) | 1896 MPa |
| Elongation | 2% |
| Hardness | 57 HRC |
WNR 1.4125 Round Bar Weight Chart
| Diameter (mm) | Weight (kg/m) |
|---|---|
| 6 | 0.22 |
| 8 | 0.39 |
| 10 | 0.62 |
| 12 | 0.89 |
| 16 | 1.58 |
| 20 | 2.47 |
| 25 | 3.85 |
| 30 | 5.55 |
| 40 | 9.87 |
| 50 | 15.42 |
| 60 | 22.20 |
| 75 | 34.68 |
| 100 | 61.65 |
Weight Formula: Weight (kg/m) = (D² × 0.006165), where D is the bar diameter in millimeters.
View Size Range of UNS S44004 Round Bar
| Product Form | Size Range |
|---|---|
| Round Bar | 4 mm – 500 mm OD |
| Bright Bar | 4 mm – 100 mm OD |
| Hex Bar | 18 mm – 57 mm |
| Square Bar | 18 mm – 47 mm |
| Flat Bar | Width: 1/2" – 10", Thickness: 2 mm – 150 mm |
| Length | 1–6 Meters, Custom Cut Lengths |
Recent AMS 5630 Stainless Steel 440C Round Bar Export Deliveries
🇸🇦
Saudi Aramco Total
Al Jubail, Saudi Arabia
30mm Diameter Ground Bars, Stainless Steel 440C
Delivered in 7 days
🇺🇸
Hess Corporation
New York City, USA
UNS S44004 Hardened Bars, 50mm Diameter
Delivered in 14 days
🇬🇧
Shell PLC
London, United Kingdom
Annealed Bars, 20mm Diameter, AISI 440C
Delivered in 14 days
🇦🇪
ADNOC
Abu Dhabi, UAE
Precision Turned Bars, 25mm Diameter, Stainless Steel 440C
Delivered in 5 days
🇿🇦
Sasol Limited
Johannesburg, South Africa
60–120mm Diameter Hot Rolled Bars, Stainless Steel 440C
Delivered in 21 days
🇩🇪
BASF SE
Ludwigshafen, Germany
WNR 1.4125 Peeled Bars, 35–70mm Diameter
Delivered in 18 days
Availability of WNR 1.4125 Round Bar
| Stainless Steel 440C Bright Round Bar | UNS S44004 Black Round Bar |
| WNR 1.4125 Polished Round Bar | Stainless Steel 440C Peeled Round Bar |
| AMS 5630 Stainless Steel 440C Turned Round Bar | AISI 440C Ground Round Bar |
| UNS S44004 Hot Rolled Round Bar | WNR 1.4125 Cold Drawn Round Bar |
| AISI 440C Bright Round Bar | AMS 5630 Stainless Steel 440C Black Round Bar |
| Stainless Steel 440C Polished Round Bar | WNR 1.4125 Peeled Round Bar |
| UNS S44004 Turned Round Bar | Stainless Steel 440C Ground Round Bar |
| AMS 5630 Stainless Steel 440C Hot Rolled Round Bar | AISI 440C Cold Drawn Round Bar |
| WNR 1.4125 Bright Round Bar | UNS S44004 Peeled Round Bar |
| Stainless Steel 440C Turned Round Bar | AMS 5630 Stainless Steel 440C Polished Round Bar |
UNS S44004 Round Bar Latest Prices
Multinox INC offers AMS 5630 Stainless Steel 440C Round Bars at one of the most competitive prices in India. Request the latest Pricelist using the contact form here.