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| Customization: | Available |
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| Type: | Stainless Steel Sheets |
| Standard: | ASTM, AISI, GB, JIS, DIN, EN |
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11cr17 is a high-carbon martensitic stainless steel, the main components include 1i%% chromium and 0.95% and .20% carbon, with high chromium and high carbon content, showing liCrl7 corrosion resistance and excellent hardness.
| ZEICIN Grade | GB | AISI | JIS | DIN/EN |
| 1.4125 | 11Cr17 | 440C/S44004 | SUS440C | 1.4125/X105CrMo17 |
| C | Si | Mn | Cr | Mo | S | P |
| 0.95-1.20 | ≤1.0 | ≤1.0 | 16.0-18.0 | 0.40-0.80 | ≤0.03 | ≤0.04 |
| # | Name | Specification |
|---|---|---|
| 1 | Steel grade | 440C / SUS440C / 11Cr17 / 1.4125 |
| 2 | Shape | Round bar / Square bar / Flat bar / Sheet or Plate / Strip or Coil / forgings |
| 3 | Tolerance | According to the order |
| 4 | Surface | Black surface / Turned Surface |
| 5 | Application | Bearings, Air Conditioning Silders |
| Process | Temperature (°C / °F) | Cooling Method |
|---|---|---|
| Annealing | 843-871°C / 1550-1600°F | Slow furnace cooling |
| Hardening | 760-1010°C / 1400-1850°F | Air or oil cooling |
| Tempering | 148°C / 300°F | - |
Production process
| Source | Observation | Reason / Process | Result |
|---|---|---|---|
| Photo 1 (Domestic) | Carbides obviously large | - | Poor carbide morphology |
| Photo 2 (Abroad) | Carbide distribution uneven, some large | Smelting is not well controlled; forging cannot compensate | Defects remain, uneven structure |
| Photo 3 (ZhengDa / Zeicin) | Carbides are small and uniform | 1) EAF+LF+VD 2) RS ESR special smelting 3) Transformation forging | Much better than imported steel |
| Source | Observation | Result |
|---|---|---|
| Photo 1 (Domestic) | Carbides are large and may detach during processing | Poor machinability |
| Photo 2 (Abroad) | Smaller but angular, causing cracks and stress | Early failure |
| Photo 3 (ZhengDa / Zeicin) | Fine, uniform carbides from an improved process | Best performance |
| Source | Observation | Reason / Process | Result |
|---|---|---|---|
| Domestic | Zonal carbides are obvious; particles larger in cross-section than longitudinal | No forging modification, only rolling | Large carbides |
| Abroad | Carbide distribution uneven; some very large | Poor smelting control; later forging cannot fix it. | Defects remain |
| ZhengDa | Carbides are small and uniform | 1) EAF+LF+VD 2) RS ESR smelting 3) Transformation forging | Superior to imports |
| Type | ZEICIN GRADE | SIMILAR STEEL GRADES | |||
| GB | JIS | ASTM | DIN | ||
| Martensite Stainless Steel | 9Cr18Mo | 9Cr18Mo | SUS440C | AISI 440C | 1.4125 |
| 9Cr18MoV | 9Cr18MoV | SUS440B | AISI 440B | 1.4112 | |
| 11Cr17 | 11Cr17 | SUS440C | AISI 440C | 1.4125 | |
| SUS440A | 68Cr17(7Cr17) | SUS440A | S44002 | 1.4109 | |
| 10Cr15Comav | 10Cr15Comav | VG10 | / | / | |
| 5Cr15MoV | 5Cr15MoV | 420hc | 420MOV | W1.4116(X50CrMoV15) | |
| 7Cr17MoV | 7Cr17MoV | SUS440A/AUS6 | 440A | / | |
| SUS440F | Y108Cr17 (Y11Cr17) | SUS440F | S44020/440F | 1.4025 | |
| SUS420J2 | 3Cr13 | SUS420J2 | S42000/420 | X30Cr13/1.4028 | |
| VG10 | / | VG10 | / | / | |
| BG42 | BG42 | / | / | / | |
| YTG134 | 4Cr13 | SUS420 | 420* | 1.2083 | |
Due to its high hardness and excellent wear resistance, 11Cr17 440C is an ideal material for bearings, which are crucial components in various mechanical systems. It ensures longevity and reliability under high-stress conditions.
In air conditioning systems, air conditioning sliders need to have wear resistance and corrosion resistance. 11cr17 (440c stainless steel) has excellent hardness and long service life, which is the ideal material for manufacturing air conditioning slides.



Q1: Do you accept trial orders?
A1: Yes, we accept trial orders, provided that the required size and model are in stock.
Q2: What is your delivery time?
A2: If the products are in stock, the delivery time is generally 5-15 days. If the products are out of stock, the delivery time may range from 15-20 days, depending on the order quantity.
Q3: Do you offer discounts for bulk orders?
A3: Yes, we offer discounts for bulk orders. The specific discount will depend on the order quantity and terms of cooperation. Please feel free to contact us for more details.
Q4: What is your product packaging like?
A4: Our products are packaged in standard industrial packaging to ensure safety during transportation. If you have specific packaging requirements, please let us know when placing the order, and we will package your items accordingly.
Q5: What payment methods do you support?
A5: We accept a variety of payment methods, including T/T, L/C, Alipay, PayPal, etc. The specific payment method can be arranged flexibly based on the order amount and customer needs.