Technical Specification
Composition
Stainless Steel Scrap
Surface
Galvanized / Black / Milled
Size Range
T: 10-800mm, W: 100-2200mm
Standard
AISI, ASTM, BS, DIN, GB, JIS
Structural Alloy Steel SCr440 40Cr
Our company specializes in high-quality Tool steel, Mold steel, and Alloy steel. Our core product range includes Plastic mold steel (P20, 1.2083), Hot Work steel (H13, SKD61), Cold work steel (D2, SKD11), and Carbon steel (S45C).
SCr440 is a versatile alloy structural steel, widely recognized for its superior tensile strength and hardenability compared to standard carbon steel.
1. Chemical Composition & Parameters
| Steel Grade |
GB |
DIN |
JIS |
| 40Cr |
1.7035 |
SCr440 |
| Chemical (Wt%) |
C |
Si |
Mn |
Cr |
S |
| Range |
0.38~0.43 |
0.15~0.35 |
0.60~0.90 |
0.90~1.20 |
≤0.030 |
2. Heat Treatment Process
Quenching: 850 ºC, oil cooling.
Tempering: 520 ºC, water cooling and oil cooling.
3. Key Applications
Perfect for parts working under alternating loads, medium speed, and medium load. Commonly used for:
- High-strength gears and sleeves
- Precision shafts and crankshafts
- Load-bearing pins and mechanical components
4. Processing & Services
- Steel Plates: Precision bandsaw cutting, milling, and heat treatment.
- Round Bars: Peeling, grinding, turning, and customized lengths.
- Testing: 100% Ultrasonic Testing (UT) and Hardness testing.
Stock & Inventory
We maintain a large inventory of advanced special steel, including Alloy steel, Cold work steel, and Hot work steel. Our facility is equipped with horizontal and vertical sawing machines, CNC milling machines, and precision grinders.
Featured Products
Plastic Mold: P20, NAK80, 2083R
Cold Work: DC53, Cr12, M2
Hot Work: H13, 1.2344
Alloy: 4140, SCM440, 40Cr
Frequently Asked Questions
Q1: How do you ensure the quality of the steel?
A: All products undergo 100% ultrasonic inspection before loading. Quality grades conform to international standards such as SEP 1921-84 (E/e, D/d) as per customer requirements.
Q2: What is your standard delivery time?
A: For items in stock, delivery is typically within 7-15 days. For customized orders or specific processing, it takes approximately 15-30 days.
Q3: Do you provide OEM or customized sizes?
A: Yes, we offer extensive customization options including specific thicknesses, widths, and lengths for both flat and round bars.
Q4: Are you a manufacturer or a trader?
A: We are a group company with our own manufacturing bases and trading divisions, specialized in high-grade tool and alloy steel.
Q5: What are your most popular steel grades?
A: Our hot-selling grades include D2/1.2379, H13/1.2344, CR12MOV, and DC53. We maintain abundant stock for immediate shipment.
Q6: Which international standards do your products meet?
A: Our materials comply with GB (China), JIS (Japan), AISI/ASTM (USA), and DIN (Germany) standards.
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