AISI 4130 UNS G41300 Structural Steel 25CrMo4 W-Nr 1.7218 JIS SCM430 Flat Bar
AISI 4130 UNS G41300 Structural Steel 25CrMo4 W-Nr 1.7218 JIS SCM430 Flat Bar
Describe
AISI 4130 alloy steel is a medium carbon, low alloy steel according to ASTM A29. ASTM 4140 steel, also commonly referred to as chromium steel or chromium molybdenum steel, nominally contains 0.28-0.33% carbon, 0.8-1.1% chromium, and 0.15-0.25% molybdenum. It is similar to 4140 steel with higher carbon content (0.28-0.33%), which improves the weldability of 4130 material. With proper heat treatment, it becomes easy to machine. Annealed ASTM 4130 alloy steel has excellent ductility. AISI 4130 steel is usually supplied as round bars, usually in the quenched and tempered condition.
Size Range
| Round bar / Wire rod (Diameter): | 4.0mm to 700mm |
| Square bar / Flat bar: | 3.6mm to 800mm |
| Forging piece: |
Stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM. |
| Heavy/middle plate via hot rolled: | T6 - 250mm X W10 - 1550mm X L1000-11000mm |
|
Sheet steel via cold rolled: |
T0.5 - 4mm X W6 - 1000mm X L1000 - 2000mm |
|
Steel strip via cold rolled: |
T0.1 - 3.5mm X W5 - 180mm X L (or in coil form) |
| Length | Fixed length or random length or based on the customer's special requirement. |
Chemical Composition and standard
| Grade |
25CrMo4/1.7218 |
AISI 4130/UNS G41300 | JIS SCM430 | NF 25CD4 |
| standard | DIN EN 10216-2 (2004) |
ASTM A29/A29M-2020 |
JIS G 4053-2003 | NF A 35-556-1984 |
| Chemical Composition (weight%) |
C(％): 0.22~0.29 Si(％): ≤0.3 Mn(％): 0.6~0.9 S(％)≤: 0.025 Ni(％): -- Cu(％): ≤0.25 |
C(％): 0.28~0.33 Si(％): 0.15~0.35 Mn(％): 0.4~0.6 S(％)≤: 0.04 Ni(％): ≤0.25 Cu(％): ≤0.35
|
C(％): 0.28~0.33 Si(％): 0.15~0.35 Mn(％): 0.6~0.9 S(％)≤: 0.03 Ni(％): ≤.25 Cu(％): ≤0.3 |
C(％): 0.23~0.29 Si(％): 0.1~0.4 Mn(％): 0.6~0.9 S(％)≤: 0.035 Ni(％): -- Cu(％): -- |
Mechanical Properties
25CrMo4/W-Nr 1.7218 Structural Steel Mechanical Properties
| Tensile strength,Rm/MPa: | ≥740 |
| Yield strength,Rp/MPa: | ≥590 |
| Elongation/%: | ≥15 |
| Reduction of area, ψ/%: | ≥55 |
| Impact, KV /J: | 55 |
| Annealed hardness HBS: | 160~205 |
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