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1.Product Name: Elongator Roll size:OD1301.74X762(L) N .W:6060 KG
2. Material: SAE 4140
3. Chemical composition and Hardness:
| Grade | C | Si | Mn | P | S | Cr | Mo | Hardness |
| SAE 4140 | 0.38-0.43 | 0.2-0.3 | 0.75-1 | ≤0.04 | ≤0.04 | 0.8-1.1 | 0.15-0.25 | HS 30-36 |
4.Ultrasonic Test: ASTM A388 FBH 4mm
5.Production process: electric steelmaking- -the ball slag forging annealing incoming super agent---thick one-conditioning-two thick car-super agent-magnetic agent-quenching
-magnetic agent-fine car-milling grinding-magnetic agent-super agent-with oil-packing-dispatched
6. Packing term: packed in seaworthy cases
Elongator Roll for SAE 4140
