31CrMoV9 Alloy Steel Rod Large Diameter 300-500mm High Strength Heat Resistant Round Bar

最小注文数量	1トン
価格	US $560-950 / Ton

商品の詳細

モデル番号	31CrMoV9	技術	鍛造
表面処理	ポリッシュ	合金の種類	非合金
直径範囲	300～500mm	炭素含有量	0.28～0.35重量％
シリコン含有量	0.15～0.40重量％	マンガンの内容	0.40～0.70重量％
クロムの内容	2.30～2.70重量%	モリブデン含有量	0.15～0.25重量％
バナジウム含有量	0.10～0.20重量％	抗張力	900〜1100 MPa
降伏強さ	700〜900Mpa	伸長	≥12%
硬度	270-320HB
ハイライト	Large Diameter 300-500mm Alloy Steel Rod , High Strength Steel Round Bar , Heat Resistant 31CrMoV9 Steel Bar

メッセージ

製品の説明

31CrMoV9 Alloy Steel Rod - Large Diameter 300-500mm

31CrMoV9 Alloy Steel Rod Large Diameter 300-500mm with custom cutting round disc capabilities for industrial applications.

Material Overview

31CrMoV9 is a chromium-molybdenum-vanadium (Cr-Mo-V) alloy structural steel renowned for its high strength, excellent toughness, and superior heat resistance. The addition of vanadium enhances grain refinement, improving creep resistance and fatigue strength, making it ideal for high-stress and high-temperature applications.

Specifications & Standards

Primary Standard: DIN EN 10083-3 (Quenched and tempered steels)
Equivalent International Standards:

ISO: 34CrMoV9 (similar composition)
USA (AISI/SAE/UNS): 4137 (similar, lacks vanadium), 4140 (common alternative)
Japan (JIS): SCM435 (similar Cr-Mo steel, lower V)
UK (BS): 722M24 (similar to En19B, no V)
France (NF): 35CD4 (similar Cr-Mo steel)

Chemical Composition (Typical, wt%)

Element	C	Si	Mn	Cr	Mo	V	P (max)	S (max)
Content	0.28-0.35	0.15-0.40	0.40-0.70	2.30-2.70	0.15-0.25	0.10-0.20	0.025	0.025

Mechanical Properties (After Heat Treatment)

Property	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Impact Energy (J)	Hardness (HB)
Typical Value	900-1100	700-900	≥12	≥40 (at 20°C)	270-320

Note: Properties vary based on heat treatment conditions, such as quenching & tempering.

Key Features & Advantages

High Strength-to-Weight Ratio - Ideal for load-bearing components
Excellent Heat Resistance - Performs well up to 500-550°C (932-1022°F)
Good Toughness & Fatigue Resistance - Suitable for dynamic loads
Weldability & Machinability - Can be welded with pre/post-heating
Vanadium-Enhanced Microstructure - Improves creep and wear resistance

International Equivalent Grades

Country	Standard	Equivalent Grade	Key Differences
Germany	DIN EN 10083-3	34CrMoV9	Higher C content
USA	AISI/SAE	4137, 4140	No vanadium (V)
Japan	JIS	SCM435, SNCM439	Different Cr-Mo-V balance
UK	BS	722M24 (En19B)	No vanadium
France	NF	35CD4	Similar Cr-Mo steel

Typical Applications

Power Generation: Turbine shafts, bolts, rotors
Aerospace: High-stress fasteners, landing gear components
Automotive: Crankshafts, connecting rods (high-performance engines)
Oil & Gas: Drill collars, pressure vessels
Heavy Machinery: Gears, axles, high-load structural parts

Performance Summary: 31CrMoV9 is a high-performance alloy steel with excellent strength, heat resistance, and fatigue durability, making it ideal for critical engineering applications. Its closest equivalents are 34CrMoV9 (ISO/DIN) and 4137/4140 (USA), though vanadium content varies. For high-temperature and high-stress environments, 31CrMoV9 remains a superior choice over standard Cr-Mo steels.

Product Images