NFA 33-101 AF70-C55 steel plate high carbon steel
AF70-C55 steel plate, NFA 33-101 AF70-C55 steel plate, under NFA 33-101 standard, we can regard AF70-C55 steel plate as high carbon steel.
AF70-C55 steel plate is one mainly of high carbon steel,NFA 33-101 AF70-C55 steel plate is a medium carbon steel which is used when greater strength and hardness is desired than in the "as rolled"condition.Extreme size accuracy,straightness and concentricity combined to minimize wear in high speed applications.Turned,ground and polished.TheAF70-C55 steel is applied in quenched and subsequently tempered steel for less exacting springs,shafts,bushings,crankshafts,etc.
| AF70-C55 NFA 33-101 Number:1.0535 | Comparision of steel grades | |
| JIS G 4051 | S 55 C | |
| DIN 17200 | C 55 | |
| NFA 33-101 | AF70-C 55 | |
| UNI 7846 | C 55 | |
| BS 970 | 070 M 55 | |
| UNE 36011 | C 55 k | |
| SAE J 403-AISI | 1055 | |
AF70-C55 steel Chemical Composition
| Grade | C(%)min-max | Si(%)min-max | Mn(%)min-max | P(%)max | S(%)max | Cr(%)min-max |
| AF70-C55 | 0.52-0.60 | 0.15-0.35 | 0.60-0.90 | 0.025 | 0.025 | 0.20-0.40 |
AF70-C55 steel Mechanical Properties
| Grade | Condition | Yield Strength R°(Mpa) | Tensile Strength Rm (Mpa) | Elon- gation A5(%) | Hardness HRC | Quenching Temperature (℃) | Benda- bility | Nominal Thickness,t 1.95mm≤t≤10.0mm | |
| Rolled | Annealed | ||||||||
| AF70-C55 | Rolled Annealed Water-quenched Oil quenched | 500 350 | 825 550 2510 2120 | 18 30 | 61 57 | 805 845 | Min.reco-mmended Bending radius (≤90°) | 3.0 ×t | 1.0×t |
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