- Shandong Youjia New Materical Co., Ltd
-
Jinan, Shandong, China
- Main products: steel pipe, steel tube, steel hollow section, galvanized steel , steel coil , steel plate, steel sheet , steel bar
Home > Products > Steel strucuture > Hot Rolled Steel Round Bar
Hot Rolled Steel Round Bar
Negotiable
/ Metric Ton
25 Metric Tons(Min. Order)
- Tianjin
- T/T L/C
- 15 days
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Product Details
| Brand Name | youjia | Place of Origin | China | |
| Type | Alloy Steel Bar | Application | Tool Steel Bar | |
| Technique | Forged | Standard | GB | |
| Alloy Or Not | Is Alloy | Dimensions | 8mm--1110mm | |
| Special Use | Mold Steel | Steel Grade | 42CrMo |
Product Description
Specifications of Round Steel Rod / Bar
Standard: AISI, JIS, DIN, GB
Grade: 4140, SCM440, 1.7225, 42CrMo
Diameter: Round steel bar 60-800mm
Flat steel bar 25-400mm*200-800mm
Length: 2-12m or as required
Technique: Hot Rolled, Forged
Surface: Black surface/ Grinded/ Machined
| GB | DIN | AISI | JIS |
| 42CrMo | 1.7225 | 4140 | SCM440 |
| Forging | Heat to 1150°C. Hold until uniform. Minimum forging temperature 850°C.Cool slowly in ashes or sand etc. | ||||||||
| Annealing | Heat to 830°C-850°C.Cool in furnace. | ||||||||
| Normalising | Heat to 870°C-900°C.Cool in still air. | ||||||||
| Stress Relieving | Annealed: Heat to 600°C-650°C.Hardened: Heat to 500°C-550°C.Cool in still air. | ||||||||
| Hardening | Heat to 830°C-880°C. Quench in oil or polymer. | ||||||||
| Tempering | Heat to 450°C-700°C cool in still air. NB. Tempering within the range 200°C-420°C will result in temper brittleness and should be avoided. | ||||||||
Chemical Composition
Chemical composition of Round Steel Rod / Bar
| C | Si | Mn | Cr | Mo | P | S |
| 0.38-0.43 | 0.40max | 0.60-0.90 | 0.90-1.20 | 0.15-0.30 | ≤0.035 | ≤0.035 |
Production Flow
Produce Process of Round Steel Rod / Bar
Electric arc furnace melting→refining furnace→vacuum treatment furnace→
→cast ingot→steel ingot anneal→ heating → high-speed forging, refining
forging→annel,retarded cooling,air cooling→quenching and tempering
treatment→finishing operation→test→finished products
Contact Us
- Shandong Youjia New Materical Co., Ltd
- Contact nameBessie Jia Chat Now
- AddressDongdu international plaza, Jinan, Shandong
Product Categories
| Steel pipe/tube | Steel coil/plate | Steel strucuture | Aluminum coil/sheet |
| HDPE pipe/tube | PVC pipe/tube |
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