Aisi 8620 1.6523 20nicrmo2-2 Sncm220 Round Steel Bar Round Bar Round Bar Rod
Dimensions | Diameter:5mm-500mm (Customized size is acceptable, pls contact supplier for more details) |
Length | 1m-9m ,by customer’s requiremnts |
| A36,Q235,SS400, 10#,20#,35#,45#,SAE 1045, SAE 1055,SAE 1065 |
Technique | Cold Drawn /Cold Pilfered /Cold Rolled/Hot Rolled /forge-Can be processed again repeatedly |
Other processing service | Hot dipped Galvanized, pre-galvanized, Color painting,coated, cutting, bending,punching |
Inspection | Third party inspection service can be offered like SGS,BV and so on.. |
Usage | Mechanical&manufacture, |
EN 1.6523 steel is an alloy steel formulated for primary forming into wrought products. 1.6523 is the EN numeric designation for this material. 20NiCrMo2-2 is the EN chemical designation. It has a moderately high density and a fairly low thermal conductivity among EN wrought alloy steels.
1.Supply Form & Size & Tolerance
Supply Form | Size(mm) | Process | Tolerance | |
| Φ6-Φ100 | Cold Drawn | Bright/Black | Best H11 |
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| Black | -0/+1mm | |
Peeled/ground | Best H11 | |||
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| Black | -0/+5mm | |
Rough Turned | -0/+3mm | |||
| Thickness :120-800 |
| Black | -0/+8mm |
Width:120-1500 | Rough Machined | -0/+3mm | ||
Remark:Tolerance can be customized as per requests
2.Chemical Composition
Standard | Grade | C | Si | Mn | P | S | Cr | Ni | Mo |
ASTM A29 | 8620 | 0.18-0.23 | 0.15-0.35 | 0.7-0.9 | ≤ 0.035 | ≤ 0.04 | 0.4-0.6 | 0.4-0.7 | 0.15-0.25 |
| 1.6523 |
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20NiCrMo2-2 | |||||||||
JIS G4103 | SNCM220 | 0.17-0.23 | 0.15-0.35 | 0.6-0.9 | ≤ 0.03 | ≤ 0.03 | 0.4-0.65 | 0.4-0.7 | 0.15-0.3 |
BS 970 | 805M20 | 0.17-0.23 | 0.1-0.4 | 0.6-0.95 | ≤ 0.04 | ≤ 0.05 | 0.35-0.65 | 0.35-0.75 | 0.15-0.25 |
GB 3077 | 20CrNiMoA | 0.17-0.23 | 0.17-0.37 | 0.6-0.95 | ≤ 0.035 | ≤ 0.035 | 0.4-0.7 | 0.35-0.75 | 0.2-0.3 |
3.Physical Property
Density g/cm3 | 7.85 |
Melting point Deg F | 2600 |
Poisson's ratio | 0.27-0.30 |
Machinability (AISI 1212 as 100% machinability) | 65% |
Thermal expansion (20 ºC)(ºC ˉ ¹) | 12.2*10^-6 |
Specific heat capacity J/(kg*K) | 477 |
Thermal conductivity W/(m*K) | 46.6 |
Electric resistivity Ohm*m | 2.34*10^-7 |
4. Mechanical Property
Typical Mechanical Properties For Core – Carburised and Oil Quenched at 840 °C
Section Size | 11mm | 30mm | 63mm |
Tensile Strength Mpa | 980-1270 | 780-1080 | 690-930 |
Yield Strength Mpa | ≥785 | ≥590 | ≥490 |
Elongation % | ≥9 | ≥10 | ≥11 |
Charpy Impact J | ≥41 | ≥41 | ≥41 |
Hardness HB | 290-375 | 235-320 | 205-275 |
Hardness HRC | 31-41 | 23-35 | 16-29 |
5.Hardenability Limits
Distance from quenched end mm | 1.5 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 20 | 25 | 30 | 35 | 40 |
HRC Min | 41 | 37 | 31 | 25 | 21 | – | – | – | – | – | – | – | – |
HRC Max | 48 | 47 | 43 | 39 | 35 | 32 | 30 | 29 | 26 | 24 | 23 | 23 | 23 |
Hardness values under 20HRC is not specified.
FAQ
Q: Which payment can you accept?
A: T/T ,L/C at sight. 30% T/T for deposit, 70% balance payment against the copy of bill of loading within 7 working days.
Q:How about the delivery time?
A: 7-10 days after receiving the deposit.
Q: Can you send a sample for the inspection?
A: We provide material sheet and accept all professional tests.
We can provide free sample to you before order.
Q: Can you make the product according to our requirements?
A: Yes, we will strictly follow your requirements, such as the way of the package, the length of the product, the treatment of the
product and so on.
Q: What is your way of the surface treatment?
A: Polished, Black, Grinding, or according customer demand.
