1.4112 vs. 1.4125 Stainless Steel: Chemical Composition

What material is 1.4112 equivalent to?

1.4112 (X90CrMoV18) material is equivalent to AISI 440B stainless steel, a high-hardness martensitic stainless steel with excellent wear resistance and edge retention, making it ideal for knives, surgical instruments, and food processing blades. It is often compared to 440C stainless steel, but has a slightly lower carbon content, resulting in better toughness.

 

What material is 1.4125 equivalent to?

The material grade 1.4125 is a European (DIN/EN) designation for AISI 440C stainless steel, also known as X105CrMo17 in EN standards, a high-carbon martensitic stainless steel known for high hardness, strength, and wear resistance, often used for knife blades, bearings, and valve parts. It's essentially the same material across standards, just with different naming conventions.

 

1.4112 vs. 1.4125 Stainless Steel: Chemical Composition

Grade	C	Cr	Mo	Mn	Si	P	S
1.4112 (X90CrMoV18)	0.85–0.95	17.0–19.0	0.9–1.2	≤1.0	≤1.0	≤0.04	≤0.015
1.4125 (X105CrMo17)	0.95–1.20	16.0–18.0	0.5–0.8	≤1.0	≤1.0	≤0.04	≤0.03

 

1.4112 vs. 1.4125 ：Mechanical Properties (Typical, Hardened & Tempered)

Property	1.4112	1.4125
Tensile Strength (MPa)	850–1000	900–1100
Yield Strength (MPa)	≥650	≥700
Elongation (%)	≥10	≥8
Hardness (HRC)	56–58	58–60

 

1.4112 vs. 1.4125 Stainless Steel: Hardness

1.4125 (X105CrMo17) stainless steel offers higher hardness than 1.4112 (X90CrMoV18), typically reaching 57-60 HRC, compared to 1.4112's range of 55-57 HRC, due to its higher carbon content, making it better for applications needing superior cutting and wear resistance, albeit with slightly reduced corrosion resistance than 1.4112.

 

1.4112 vs. 1.4125 Stainless Steel: Corrosion Resistance

1.4112 (AISI 440B) offers better corrosion resistance than 1.4125 (AISI 440C) because it has slightly less carbon and added vanadium, but 1.4125 achieves higher hardness and wear resistance; both are martensitic steels, good for cutting tools, but 1.4125 sacrifices some corrosion resistance for extreme hardness, while 1.4112 balances decent corrosion resistance with excellent hardness in mild environments.

 

1.4112 vs. 1.4125 Stainless Steel: Weldability

Both 1.4112 (440B) and 1.4125 (440C) are hardenable martensitic stainless steels with challenging weldability due to their high carbon content, leading to air hardening and cracking risks; 1.4125 (440C) generally has higher hardness and carbon, making it even more difficult to weld than 1.4112, but both require careful preheating, controlled interpass temperatures, and extensive post-weld heat treatment (PWHT) for stress relief and to prevent cracking, often making them less ideal for welding compared to other stainless types.

 

1.4112 vs. 1.4125 Stainless Steel: Applications Comparison

Requirement	Recommended Grade
Medical & hygienic tools	1.4112
Precision cutting with corrosion exposure	1.4112
Maximum hardness & wear resistance	1.4125
Heavy-duty industrial blades	1.4125
Bearings & high-stress wear parts	1.4125

 

 What is the difference between 1.4125 and 1.4401 stainless steel?

1.4125 (440C) is a high-carbon martensitic steel known for extreme hardness, wear resistance, and edge retention (like knives, bearings), while 1.4401 (316) is a lower-carbon austenitic grade, offering superior general corrosion resistance (especially against chlorides) due to its nickel and molybdenum content, making it great for marine/chemical uses, but it's softer and less wear-resistant than 1.4125. The core difference: 1.4125 for hardness, 1.4401 for corrosion resistance.

 

If you have project requirements for 1.4125 440C stainless steel bars, please feel free to place an order. GNEE Stainless Steel is an independent stockist and processor of 440B/440C stainless steel. With our extensive inventory and superior processing capabilities, we can meet the needs of most projects, whether for stock products or custom orders. We offer: stock size plates and sheets, stock length round bars, custom-sized plates and sheets, custom-sized round bars, cold forming of plates, sheets, and round bars, and any other necessary processing services. For any inquiries, please email info@gneestainless.com