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| Categories | Structural Steel Pipe |
|---|---|
| Brand Name: | TORICH |
| Model Number: | JIS G4051 |
| Certification: | API,ISO,ISO9001,BV,SGS |
| Place of Origin: | Zhejiang/China |
| MOQ: | 1Ton |
| Price: | 800-1000 USD/Ton |
| Payment Terms: | MoneyGram,Western Union,T/T,D/P,D/A,L/C |
| Supply Ability: | 60000 Ton/Tons per Year |
| Delivery Time: | 20-30days upon products |
| Packaging Details: | In bundles or in wooden boxes. |
| Application: | Structure Pipe,Fluid Pipe,Boiler Pipe,Bridge,oil |
| Grade: | S40C S45C S50C S48C S55C |
| Alloy or not: | Non-alloy,Is Alloy |
| Standard: | ASTM,DIN,JIS,API,GB |
| Section shape: | Round,Square,Round welded steel pipe,Square/Rectangular,Rectangular |
| Secondary or not: | Non-secondary |
| Length: | 5-12M or as your requirement |
| Company Info. |
| TORICH INTERNATIONAL LIMITED |
| Verified Supplier |
| View Contact Details |
| Product List |
S45C is a medium-carbon steel grade specified under JIS G4051, intended for machine structural applications. With a carbon content of approximately 0.45%, it provides a balanced combination of strength, toughness, and machinability. It is commonly supplied as hot-rolled, normalized, annealed, or quenched-and-tempered round bar for various mechanical components.
Standard: JIS G4051 (Carbon steels for machine structural use)
Common supply form: Round bar (also available as flats, squares, plates)
Production methods: Hot rolling or hot forging
Typical delivery conditions: Hot-rolled, normalized, annealed, or Q&T depending on requirements
Size range: Manufacturer-dependent; widely available for shafts, pins, and mechanical parts
Medium carbon content ensures high strength and good wear resistance
Suitable for heat treatments including annealing, normalizing, quenching, and tempering
Good machinability in normalized or annealed condition
Suitable for moderately loaded parts requiring impact resistance
Weldability is limited and requires preheating or post-heat due to higher carbon content
1. Chemical composition consistency
We guarantee full compliance with JIS G4051 chemical specifications
for S45C. Every batch is accompanied by mill test certificates and
full traceability to ensure stable composition.
2. Reliable mechanical properties
We supply S45C with verified mechanical performance. Typical ranges
include tensile strength of 570–700 MPa and yield strength around
330 MPa in the normalized condition. Mechanical tests (tensile,
hardness, impact) can be provided on request.
3. Excellent processing support
We offer S45C in optimal conditions for machining and provide
heat-treatment guidance for applications requiring higher surface
hardness. Customized services such as cutting, machining,
hardening, and tempering are available.
4. Suitability for structural machine components
S45C is widely used for shafts, connecting elements, gears, and
load-bearing parts. We help customers select the proper condition
(normalized, annealed, Q&T) to match performance and service
life requirements.
| Grade | Standard | C (%) | Si (%) | Mn (%) | P (%) | S (%) |
|---|---|---|---|---|---|---|
| S45C | JIS G4051 | 0.42–0.48 | 0.15–0.35 | 0.60–0.90 | ≤0.03 | ≤0.035 |
| S40C | JIS G4051 | 0.37–0.43 | 0.15–0.35 | 0.60–0.90 | ≤0.03 | ≤0.035 |
| S50C | JIS G4051 | 0.47–0.53 | 0.15–0.35 | 0.60–0.90 | ≤0.03 | ≤0.035 |
| S48C | JIS G4051 | Approx. 0.45–0.50 | Typical JIS levels | Typical JIS levels | ≤0.03 | ≤0.035 |
| S55C | JIS G4051 | Approx. 0.52–0.58 | Typical JIS levels | Typical JIS levels | ≤0.03 | ≤0.035 |
| Grade | Standard | Condition | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness / Notes |
|---|---|---|---|---|---|---|
| S40C | JIS G4051 | Normalized/Annealed | ≥335 | ≥570 | ≥19 | ~≤217 HB |
| S45C | JIS G4051 | Normalized/Annealed | ~330 | 570–700 | — | Heat treated material can reach higher hardness |
| S50C | JIS G4051 | Annealed | ≥375 | ≥630 | ≥14 | ~≤235 HB |
| S48C | JIS G4051 | — | — | — | — | Limited published data |
| S55C | JIS G4051 | — | — | — | — | Higher hardness when heat treated |
Primary standard: JIS G4051 – Carbon steels for machine structural use
Common equivalency references:
DIN/EN: C45 / CK45
AISI/SAE: 1045
EN 10083 structural steel family
S45C is used for machine components requiring moderate to high strength, good machinability, and optional heat treatment for increased hardness.
Shafts and axles: Drive shafts, spindles, crankshafts
Pins, studs, and keys: Locking pins, studs, bolts, key bars
Gears and rollers: Hardness-treated gears, rollers, and wear parts
Machine tool components: Holders, fixtures, forged parts
Automotive and hydraulic components: Piston rods, cylinder rods, connecting parts
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,
it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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