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Grand Metal Corporation is acknowledged as a manufacturer, exporter & suppliers of Alloy Steel Round Bars, available in a variety or grades, materials, and finishes, in metric and inch sizes. We have a full range available always, with unrivalled lead times, superior quality and exemplary customer service, leading Alloy Steel Round Bars. Our inventory in stainless Alloy Steel Round Bars ranges from 1/8" to 24" in diameter. We are the industry leader in long length bar with inventory ranging from 20'-24' R/L. we're able to provide Stainless Steel material for projects requiring lengths longer than the industry standard 12' lengths. The long lengths also provide flexibility for part lengths that would typically leave excess scrap from the standard 12' lengths.

Grand Metal Corporation carries a variety of Alloy Steel Round Bars and supply at Best suitable price.

Key Specifications/Special Features:
• Steel round bar
• Material: SCM420, SCM415, 20Mn-65Mn, 15CrMo-42CrMo, 20Mn2-40Mn
• Size: 20-100mm, 100-800mm
• Length: 3-6m
• Standard: JIS, GB, ASTM
• Delivery condition: rough turned+quenching and tempering

41Cr4/40Cr/ASTM5140/SCr440 Hot Rolled Alloy Steel Round Bars
• Key Specifications/Special Features:
• Material: hot rolled alloy steel
• Steel grades: 41Cr4, ASTM5140, SCR440 and 40Cr
• Technical conditions: GB/T3077-1999 (China) and ASTM A29/A29M-04
• Length: 3 to 6m • Size: 12 to 800mm

GB 42CrMo Alloy Steel Bars with Higher Intensity, Good Fatigue Strength and Better Hardenability
• ASTM 4140

Key Specifications/Special Features:
• GB 42CrMo chemical composition:
• C: 0.38 to 0.45
• Si: 0.17 to 0.37
• Mn: 0.50 to 0.80
• S: ≤0.035
• P: ≤0.035
• Cr: 0.90 to 1.20
• Ni: ≤0.030
• Cu: ≤0.030
• Mo: 0.15 to 0.25
• Technique: forged

GB 42CrMo mechanical property:
• Tensile strength σb: ≥1,080 (110)MPa
• Yield strength σs: ≥930 (95)MPa
• Elongation δ5: ≥12%
• Hardness: ≤217HB
• Sizes:

Diameter: 12 to 200mm
Hot rolling: 200 to 800mm
• Flat bar:

Thickness: 10 to 100mm Width: 50 to 500mm
• Surface treatment: black, coated or galvanized, no flaw and burr or rust
• Process: EAF + LF + VD + forge
• Delivery condition: hot rolled, black, annealing and hardness: HBS=160 to 210, or hot rolled/forged + rough machined (black surface after Q/T) + turned (optional)
• UT: to SEP 1924 C/c and D/d or according to customer's request

Futures:
• Compared with 35CrMo, the 42CrMo has higher intensity and better hardenability
• Good fatigue strength and impact resistance
• Good low temperature impact toughness
• No temper brittleness
• Usually used after tempered

Application:
• Often applied for making important machinery parts, such as bearing, gear, connecting rod, transmission gear, supercharger gear, engine cylinder, spring and rotary shouldered connections (1,200 to 2,000mm) for petroleum industry and jar knocker
• Substitute of hardened and tempered steel with higher chromium composition