AISI/SAE 8720（UNS G86200）steel is a type of low carbon and low alloy structural steel containing chromium, nickel and molybdenum. Both 8620 vs 8620H belong to the ASTM A29 standard. They provided good carburizing, hardenability, mechanical properties and machining properties appropriate for the annealed condition. The 8620 steel material could be case hardened, so the hardness could be different after hardening. So the AISI 8620H is the “H” condition of 8620 steel with required hardenability.
Standards: ASTM A29
Size: 6mm-350mm
Type: Round bar
Delivery conditions: Annealed, Cold Finished, Normalized
MATERIAL | EN/DIN | UNS | JIS | GB |
8620 | 20NiCrMo2-2 | G87200 | JIS G 4052 SNCM220 | 20CrNiMo |
8620H | 21NiCrMo2 | JIS G 4052 SNCM 220H | 20CrNiMoH |
Chemical composition
MATERIAL | C | Si | Mn | Cr | Ni | Mo | S | P |
8620 | 0.18-0.23 | 0.15-0.35 | 0.7-0.9 | 0.4-0.6 | 0.40-0.7 | 0.15-0.25 | ≤0.04 | ≤0.035 |
8620H | 0.18-0.23 | 0.15-0.35 | 0.70-0.9 | 0.40-0.6 | 0.4-0.7 | 0.15-0.25 | ≤0.04 | ≤0.035 |
The Mechanical Properties
Tensile Strength | Yield Strength 0.2% (MPa) | Elongation -% in 50 mm (min.) | Hardness, HB |
≥500 MPa | ≥330 MPa | 25 % | 150 |
Applications
This alloy is for primary forming into wrought products of medium-strength parts such as forged camshafts, fasteners and gears.
World iron&steel is a professional supplier of alloy steel rods and bars. We manufacture and distribute high-quality 8620/8620H steel round bar for gear application in accordance with standards ASTM A29, specified delivery conditions and final customer specifications for industrial and commercial applications. Special sizes of steel bars and delivery issues can be further negotiated and we provide a wide range of solutions for purchasing departments to select alternative grades, contact us today!