TORICH INTERNATIONAL LIMITED
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products |
| Packaging Details | In bundles or in wooden boxes. |
| Application | Crankshaft |
| Outer diameter(round) | 30 - 325 mm |
| Thickness | 2 - 50 mm |
| Length | 6M or as requirement,As customer's require,8m,5.8m,2.5-8m |
| Standard | ASTM,DIN,GB,JIS,API |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn |
| Grade | 15CDV6 42CrMo4 4140 SCM435 30KhGsA |
| Section shape | Round,Rectangular |
| Brand Name | TORICH |
| Model Number | 15CDV6 Tube |
| Certification | ISO9001 ISO 14001 TS16949 |
| Place of Origin | Zhejiang/China |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products | Packaging Details | In bundles or in wooden boxes. |
| Application | Crankshaft | Outer diameter(round) | 30 - 325 mm |
| Thickness | 2 - 50 mm | Length | 6M or as requirement,As customer's require,8m,5.8m,2.5-8m |
| Standard | ASTM,DIN,GB,JIS,API | Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn |
| Grade | 15CDV6 42CrMo4 4140 SCM435 30KhGsA | Section shape | Round,Rectangular |
| Brand Name | TORICH | Model Number | 15CDV6 Tube |
| Certification | ISO9001 ISO 14001 TS16949 | Place of Origin | Zhejiang/China |
| High Light | 15CDV6 Seamless Steel Tube ，Crankshaft Application Precision Steel Tube ，30 - 325 mm Outer Diameter High-Strength Low-Alloy Tube | ||
1.7734 (15CDV6) is a low-carbon Cr-Mo-V high-strength low-alloy steel widely selected when crankshaft and rotating parts need a strong strength-to-weight balance, high fatigue capability, and reliable toughness. It is commonly referenced in aerospace and motorsport supply chains and is well known for being weldable compared with many other high-strength alloy steels.
Product form: Seamless round steel tube (hot-finished and/or cold-drawn; heat treatment per requirement).
Typical supply length: 1–7 meters; custom cut available.
Straightness (typical): 0.3–2 mm/m (by supply class).
Delivery condition (common): Annealed / normalized / quenched & tempered (Q&T) to target strength level.
Inspection (typical options): Dimensional check, chemical analysis, tensile/impact testing, and NDT such as UT/ET upon request (based on project requirement).
High yield & tensile strength with toughness (strength level adjustable via heat treatment).
Good weldability profile for a high-strength steel (especially compared with many Cr-Mo grades that require stricter welding controls).
Cr-Mo-V alloying supports fatigue-critical parts such as shafts and crankshafts, with stable properties after Q&T.
1) “Can it be welded safely without losing properties or cracking?”
15CDV6 is widely described as readily weldable with minimal property loss and typically without mandatory post-weld heat treatment in many practical applications.
For comparison, common Cr-Mo steels like 4140 often require strict preheat/controlled procedures and are frequently discouraged for welding in the hardened & tempered condition. We provide fabrication guidance and can supply in a fabrication-friendly condition if welding is part of your process route.
2) “What strength level should I specify for crankshaft fatigue life?”
We support Q&T strength targets by diameter/thickness and can align supply to your machining + final heat-treat plan (rough-machining first, then finish Q&T, or supply Q&T directly). Typical published strength windows are shown in the mechanical table below.
3) “Do you control toughness/impact performance?”
Where required, we can quote impact requirements and test plans (Charpy/Izod) consistent with the referenced standard/condition. Comparable grades commonly publish minimum impact values by section.
4) “Will machinability and dimensional stability be OK for crankshaft machining?”
We can supply the tube in an annealed/normalized state for efficient rough machining, then Q&T to final strength; or supply in pre-hardened/Q&T condition when your process needs immediate high strength.
5) “How do I confirm equivalence across standards and avoid a wrong substitute?”
We provide cross-standard reference support (EN/ASTM/JIS/GB/GOST) and can propose the closest practical alternative if a project mandates a different national standard.
| Grade | Standard system (typical reference) | C | Si | Mn | Cr | Mo | V | P | S |
|---|---|---|---|---|---|---|---|---|---|
| 15CDV6 (1.7734) | AIR 9160C (commonly referenced) | 0.12–0.18 | ≤0.20 | 0.80–1.10 | 1.25–1.50 | 0.80–1.00 | 0.20–0.30 | ≤0.020 | ≤0.015 |
| 42CrMo4 (1.7225) | DIN EN ISO 683-2 / EN family | 0.38–0.45 | 0.10–0.40 | 0.60–0.90 | 0.90–1.20 | 0.15–0.30 | — | ≤0.025 | ≤0.035 |
| AISI 4140 | ASTM A29 (commonly referenced) | 0.36–0.44 | 0.10–0.40 | 0.65–1.10 | 0.75–1.20 | 0.15–0.35 | — | ≤0.04 | ≤0.04 |
| SCM435 | JIS G4053 | 0.33–0.38 | 0.15–0.35 | 0.60–0.90 | 0.90–1.20 | 0.15–0.30 | — | ≤0.03 | ≤0.03 |
| 30KhGSA (30ХГСА) | GOST 4543 (commonly referenced) | 0.28–0.34 | 0.90–1.20 | 0.80–1.10 | 0.80–1.10 | — | — | ≤0.025 | ≤0.025 |
Data compiled from published grade references/datasheets.
Note: Mechanical properties vary with section size and heat treatment. Values below reflect commonly published Q&T / treated conditions.
| Grade | Condition basis (example) | Yield / Proof (MPa) | Tensile (MPa) | Elongation (%) | Impact (example) |
|---|---|---|---|---|---|
| 15CDV6 (1.7734) | Treated Ø16–40 mm (example) | ≥930 | 1080–1280 | ≥10 | — |
| 42CrMo4 (1.7225) | Q&T, round 16–40 mm | ≥750 | 1000–1200 | ≥11 | ≥35 J (Charpy-V) |
| AISI 4140 | Heat-treated condition “T” (example table) | ≥665 (0.2% proof) | 850–1000 | ≥13 | ≥50 J (Charpy) |
| SCM435 | Reported minimum values (example) | ≥835 | ≥985 | ≥12 | ≥63 J (Akv) |
| 30KhGSA (30ХГСА) | Q&T example (Ø25 bar listing) | 830 | 1080 | 10 | 490 kJ/m² (KCU) |
Data compiled from published grade references/datasheets.
ASTM (typical references for similar alloy tubes/chemistry):
ASTM A519 (seamless mechanical tubing); ASTM A29/A29M (chemistry reference for 41xx families, e.g., 4140).
EN (common routes for mechanical tubes & Q&T alloy steels):
EN/ISO 683-2 (Q&T alloy steels; includes 42CrMo4); project-specific tube supply often aligns with EN seamless tube standards depending on end use.
GOST:
GOST 4543 (alloy structural steels); GOST 8731 / GOST 8733 (seamless tube references shown in grade listings).
JIS:
JIS G4053 (SCM series alloy steels for machine structural use).
GB (China):
Common equivalents for the Cr-Mo family include GB/T 3077 (42CrMo) (often cross-referenced with 42CrMo4 / 4140).
Broad industries: automotive & motorsport driveline parts, aerospace structures, heavy machinery, energy equipment.
Where it’s used inside the crankshaft value chain:
Crankshaft body/blank machining: high-strength tube/stock for weight reduction concepts or specialized designs.
Related rotating components: connecting rods, shafts, axles, gear/drive elements—especially where fatigue resistance and Q&T strength stability are critical.
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.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
1997
Total Annual:
25000000-30000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
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