4 - 60mm Thickness Casing Hardened Steel Flat Bar For Railway Spare Parts
Brand Name:Unite Steel
Certification:ISO/BV/SGS/MTC
Model Number:Flat bar
Minimum Order Quantity:MOQ : 2-3 Ton
Delivery Time:Within 15-45 days
Payment Terms:L/C, D/A, D/P, T/T
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Location:
Shanghai Shanghai China
Address:
Room 1109, Loft Office, Green Land International Plaza, No. 275-8 Guoding East Road, Shanghai 200433, P.R. China. (admin(a)shunitesteel.com)
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Product Details
AISI 4140/42CrMo4/SCM440 Hot Rolled Steel Bar ,Flat Steel Bar, Casing Hardened Flat bar, Low MOQ, Surface can machined
1.Application:
Flat steel flat bar point to the the steel that the width is 12-300 mm, the thickness is 4-60mm
thick, and cross section is rectangle with the edge of a little pure steel.
Main use: flat as timber can be used in the system of hoop iron parts, tools and machinery.
It also can be used as frame structure and escalator.
Flat Bar is used for general fabrication, making structures and frames.
Mild Steel Flat Bar can be easily cut and drilled, and is particularly suited to welding.
Examples of its use include furniture making, machinery manufacturing,
shipbuilding, railway spare parts, iron towers, steel structures, and boilers.
2.Specification:
Thickness:3-50mm
Width:20-600mm
| Comparative standard | Grade | C | Si | Mn | Cr | Mo | V | W | P | S | Ni |
| GB | 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.80-1.20 | 0.15-0.25 | max0.035 | max0.035 | |||
| AISI | 4140 | ||||||||||
| JIS | SCM440 | ||||||||||
| DIN | 42CrMo4/1.7225 | 0.41 | 0.20 | 0.75 | 1.05 | 0.23 | 0.03 | 0.03 | |||
| Dimensions | |||||||||||
| Round bar | |||||||||||
| Dia:16mm~700mm | Length:2m~6m | ||||||||||
| Flat bar | |||||||||||
| Thickness:20mm~500mm | Length:2m~12m | ||||||||||
| *Dimensions can be customized | |||||||||||
| Heat Treatment | |||||||||||
| Perheat treatment | |||||||||||
| 1.Annealing:heating temperature 840-860°C ,heat preservation 2 hours ,cool slowly in furnace, | |||||||||||
| hardness ≤ 217 HBS. | |||||||||||
| 2.Normalizing:heating temperature 850-900°C ,air cooling . | |||||||||||
| 3.High temperature tempering :heating temperature 680-700°C,air cooling,hardness ≤ 217 HBS. | |||||||||||
| Quenching and tempering | |||||||||||
| 1.Quenching: heating temperature 840-880°C,oil cooling, hardness ≥ 53 HRC . | |||||||||||
| Tempering : heating temperature 450-650°C ,air cooling ,hardness 25-40 HRC. | |||||||||||
| 2.Induction quenching :heating temperature 900°C,emulsion cooling,surface hardness ≥ 53 HRC . | |||||||||||
| Tempering :160-180°C,air cooling ,hardness ≥ 50 HRC . | |||||||||||
| Detail information | |||||||||||
| Process | EAF+LF+VD+Forging+(Rolling)+Annealing Condition (optional) | ||||||||||
| Delivery Condition | Hot forged+Rough machined/turned surface | ||||||||||
| MOQ | 1 ton | ||||||||||
| Technical Data | According to customer’s requirements of chemical composition, physical properties and mechanical testing | ||||||||||
| Ultrasonic Test | Ultrasonic test according to SEP 1921-84 G3 D/d E/d | ||||||||||
| Applications | |||||||||||
| Hot extrusion dies, forging die forging hammer, forging press die, precision forging die well as aluminum, copper and alloys die-casting mold. | |||||||||||
4 - 60mm Thickness Casing Hardened Steel Flat Bar For Railway Spare Parts
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