18CrNiMo7-6 (1.6587) / 17CrNiMo6 / Forged Rough Turned Heat Treatment and Machined Alloy Steel Forged Shaft
Alloy Steel Round Bar 30CrNiMo8:
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Material: |
30CrNiMo8 |
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Diameter: |
10mm-700mm |
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Length: |
3000mm-12000mm Straightness: 3mm/M max |
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Process: |
EAF + LF + VD + Forged + Heat Treatment (optional) |
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Delivery condition: |
Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) |
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Delivery Time: |
30-45 days |
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MOQ: |
1 tons |
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Heat treatment: |
Normalized / Annealed / Quenched / tempered |
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Technical Data: |
According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing |
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Test: |
Ultrasonic test according to SEP 1921-84 G3 C/c |
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Marking: |
Grade, heat NO. length will be stamped one each bar with required color |
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Payment: |
30% advance by TT, the balance against B/L |
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Application: |
Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears. |
18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 Forged rough turned round bars
1.18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 forged steel bar sizes we can offer;
Round bar: 200-1000mm
Square bar:150×150-600×600mm
2.Supply condition for 18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 Forged steel bars:
Black /Rough Machined /Rough turned
3.Futhur heat treatment for 18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 forged steel :
Normalized
Annealed
Q&T(Quenched&Tempered)
4.18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 Forged Steel round bar tolerance:
Black surface
Forged sizes up to 500mm (-0/+5mm)
Forged sizes above 500mm in diameter (-0/+8mm)
Machined surface to all sizes (-0/+3mm)
5. 18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 Equivalent
| EU | Germany | France | England | Italy | China | Finland | Inter |
| EN | DIN,WNr | AFNOR | BS | UNI | GB | SFS | ISO |
| 18CrNiMo7-6 | 17CrNiMo6 | 18NCD6 | 820A16 | 18NiCrMo7 | 17Cr2Ni2Mo | 511 | 18CrNiMo7 |
| 17CrNiMo7 |
6.Chemical composition of 18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7
| C | Si | Mn | Ni | P | S | Cr | Mo |
| 0.15 - 0.21 | max 0.4 | 0.5 - 0.9 | 1.4 - 1.7 | max 0.025 | max 0.035 | 1.5 - 1.8 | 0.25 - 0.35 |
7.HEAT TREATMENT OF 18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 FORGED STEEL
- Soft Annealing: Heat 17CrNiMo6 to 650-700oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 229.
- Normalizing: 850-880oC, air.
- Hardening: Carburising: 880-980oC. Core Hardening: 830-870oC, water. Case Hardening: 780-820oC, water.
- Tempering:Temperature: 150-200oC
8.Quality control:
1. Melting Process: EAF/BOF+LF+VD resulting in ingots
2. Both ends cut by saw
3. Ratio of forging:minimum 3:1
4. Grain size of final product: according to ASTM E112 more than 5,preferred more than 8
5. Ultrasonic test: As per SEP1921 Class C/c or D/d
9.MOQ: one piece per size/grade
10.Payment term: FOB CIF CFR EXW and so on
11.Delivery time : 7 to 30 days after deposit received.
12.Mark on both ends
Heat number, size, Length,grades, Weight,Origin (as per contract), or other as required
Business Terms
Packing
i. Common Standard Export-sea Packing : Each bundle is fixed at lest three times strips , wrapped with durable PVC material .
ii. Special Packing : Covered with film and packed in wooden box .
MOQ:1 Ton
Payment Term:30% advanced T/T payment, the balance before shipment or against copy of B/L
Shipment Term :The goods should be loaded with 20ft container or LCL
Quality Assurance:Mill Test Certificate is provided, Third Party Inspection is acceptable , Free Sample is available for Testing and welcome to our factory for personal inspection .
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