420 Stainless Steel Sheet – The World’s #1 Cutlery & Surgical-Grade Martensitic Sheet (HRC 56 After Heat Treatment)

When your product demands maximum hardness, wear resistance, and still-affordable stainless, 420 Stainless Steel Sheet is the undisputed champion. With 0.15–0.40 % carbon, this martensitic grade delivers up to HRC 56 after quench & temper, excellent wear resistance, and good corrosion resistance in mild environments—all while remaining fully magnetic and 30–40 % cheaper than 304. From high-end kitchen knives and surgical scalpels to plastic molds and mining wear plates, 420 stainless steel sheet offers the best hardness-to-price ratio in the stainless world—making it the first choice for knife factories, surgical instrument makers, and global traders who prioritize performance and economy.

Caption: Premium 420 Stainless Steel Sheet – 8K Mirror Finish, Ideal for High-End Cutlery & Surgical Blades

Key Features & Benefits

Martensitic structure – up to HRC 56 after heat treatment
Highest hardness among standard stainless grades
Excellent wear resistance – ideal for cutting edges, molds, shafts
Good corrosion resistance in mild indoor and urban atmospheres
Fully magnetic – suitable for induction heating & sensor apps
Lowest stainless price – 30–40 % cheaper than 304
Wide finish range – mirror, No.4, BA, 410 BA stainless steel sheet equivalent

Technical Specifications

Table 1 – Chemical Composition (ASTM A240)

Element	420 %	410 %	440C %	304 %
Cr	12.0–14.0	11.5–13.5	16.0–18.0	18.0–20.0
Ni	≤0.75	≤0.75	≤0.75	8.0–10.5
C	0.15–0.40	≤0.15	0.95–1.20	≤0.08
Mn	≤1.00	≤1.00	≤1.00	≤2.00
Fe	Balance	Balance	Balance	Balance

Table 2 – Mechanical Properties (ASTM A480)

Condition	Yield MPa	Tensile MPa	Hardness HRC	Standard
Annealed	≥345	≥635	≤22	ASTM A240
Q&T 300 °C	≥1200	≥1400	52–56	ASTM A240
Q&T 500 °C	≥1000	≥1200	45–50	ASTM A240

Quench 980–1050 °C, oil/air; temper 200–600 °C.

Size & Finish Range

Cold Rolled

Thickness (mm)	Width (mm)	Finish Options	Standard
0.1–1.0	1000–1250	2B, BA, No.4, 8K	ASTM A240
1.0–3.0	1000–1524	2B, No.4, HL	ASTM A240
3.0–6.0	1000–2000	No.4, HL	ASTM A240

Hot Rolled

Thickness (mm)	Width (mm)	Finish Options	Standard
3.0–12	1250–2000	No.1, pickled	ASTM A240
12–50	1500–2500	No.1, HRAP	ASTM A240
50–100	1500–3000	No.1, forged	ASTM A240

Custom lengths 1000–12000 mm, cut-to-size available.

Product Range & Market Info

As the largest 410 hot rolled stainless steel sheet manufacturer & 410 hot rolled stainless steel sheet wholesaler in China, we operate a 400 000 t/year Steckel mill with in-house quenching & tempering lines dedicated to 410 stainless steel sheet production. Our 250 000 m² facility keeps 60 000 t of ready stock in Shanghai and Houston, ensuring immediate availability for global knife makers and surgical instrument producers. Whether you need one coil of 2 mm × 1219 mm or a full plate of 50 mm × 2500 mm, our mill-direct 410 cold rolled stainless steel sheet price and ISO-approved quality give you the competitive edge. Contact our export team today for the most updated 420 stainless steel sheet pricelist and downloadable 3.1 MTC.

Specialty products include complete 410 BA stainless steel sheet – mirror-finish Ra ≤0.2 µm, manufactured under ASTM A240.

Caption: 420 Hot Rolled Stainless Steel Sheet – Mill-Direct from Leading 420 Hot Rolled Stainless Steel Sheet Manufacturer & Wholesaler

Main Applications

Kitchen knives – blades, cleavers, scissors
Surgical instruments – scalpels, forceps, clamps
Dental & medical tools – drills, chisels
Industrial blades – plastic, paper, textile
Plastic molds – injection, blow, extrusion
Pump & valve parts – shafts, plungers, seats
Fasteners & bolts – high-strength, magnetic
Measuring tools – calipers, gauges
Wear plates – mining, quarrying, crushing

Why Choose Us – Martensitic Specialist

Mill-direct pricing – 30–40 % cheaper than 304
400 000 tons annual martensitic capacity – 5-day lead time
ISO 9001 & PED certified – EN 10204 3.1 & 3.2 MTC supplied
In-house quenching & tempering furnaces – hardness up to 56 HRC
Same-day cutting & polishing – tolerances ±0.2 mm, mirror finish
Real-time 420 stainless steel sheet pricelist – updated daily at 08:00 CST

Caption: Massive Stock & Daily Updated 420 Stainless Steel Sheet Pricelist – Trusted 420 Stainless Steel Sheet Suppliers Worldwide

Grade Comparison Table: 420 vs 410 vs 420J2 vs 440A/C vs 304

Grade	Cr %	C %	Hardness HRC (Q&T)	Relative Cost	Best Use
420	12–14	0.15–0.40	52–56	0.65×	Cutlery, surgical
410	11.5–13.5	≤0.15	45–50	0.6×	Valves, fasteners
420J2	12–14	0.26–0.35	50–54	0.7×	Budget blades
440A/C	16–18	0.60–1.20	58–60	2.0×	Premium blades
304	18–20	≤0.08	≤22	1.0× (base)	General corrosion

FAQ – 420 Stainless Steel Sheet

What is the latest 420 stainless steel sheet pricelist?
Mill-direct FOB China USD 2.00–2.40/kg depending on carbon surcharge; fixed for 48 h.
Heat treatment guide?
Quench 980–1050 °C, oil or air; temper 200–600 °C to achieve 45–56 HRC.
Hardness range after tempering?
45–56 HRC at 200–400 °C; decreases above 500 °C for toughness.
Stock thickness range?
410 cold rolled stainless steel sheet company stock 0.1–6 mm, 410 hot rolled stainless steel sheet manufacturer 3–100 mm – 60 000 t ready.
BA vs 2B finish?
410 BA stainless steel sheet is bright annealed mirror-like; 2B is matte cold-rolled.
Minimum order quantity?
One sheet for stock sizes; full container (≈25 t) for mill-direct custom thickness.
Which certificates accompany the shipment?
EN 10204 3.1/3.2 MTC, ISO 9001, PED 2014/68/EU, and third-party inspection (SGS/TÜV/BV).
Do you export worldwide?
Yes, to 80+ countries including UK, Germany, India, UAE, South Korea, and Australia.

Call-to-Action

Stop paying nickel premiums. Contact the largest 420 stainless steel sheet manufacturer today for the latest 420 stainless steel sheet pricelist, immediate access to massive 420 stainless steel sheet raw material stock, and same-day cutting of any thickness.