1.4113 bar

434 / UNS S43400 / EN 1.4113 / DIN X6CrMo17-1 / JIS SUS434 / GOST 08Kh17M es un acero inoxidable ferrítico al cromo-molibdeno derivado del grado 430, con ~1 % de molibdeno añadido para mejorar la resistencia a la corrosión por picadura y en ambientes que contienen cloruros. SHUNFU METAL suministra este grado en barra laminada, barra forjada, placa y tubo con certificación ISO 9001 y trazabilidad de colada completa.

Introducción al acero inoxidable 434 / 1.4113

Barra redonda laminada de acero inoxidable 434 suministrada por SHUNFU METAL
Barra redonda laminada 434
SHUNFU METAL

El grado 434 es la evolución directa del 430: mantiene la estructura ferrítica magnética, la buena resistencia a la oxidación hasta 870 °C y el perfil de bajo coste sin níquel, pero incorpora entre 0,90 y 1,40 % de molibdeno que eleva su resistencia al ataque por cloruros y a la corrosión en carretera (sal de deshielo). Esta mejora lo convierte en el material de referencia para molduras y sistemas de escape en automoción, así como para electrodomésticos de línea blanca expuestos a ambientes costeros o húmedos.

En SHUNFU METAL, cada colada de 434 / 1.4113 se produce en horno de arco eléctrico con refinado AOD, garantizando C ≤ 0,06 % y la incorporación precisa de molibdeno verificada por espectrometría OES en línea. El producto se entrega con certificado de inspección 3.1 según EN 10204.

Equivalencias internacionales del grado 434 / S43400

Tabla 1 — Equivalencias del acero inoxidable 434 en normas internacionales
Norma Designación País / Región Documento de referencia
ASTM / UNS 434 / S43400 EE. UU. ASTM A240 / A276 / A268
EN / DIN X6CrMo17-1 / 1.4113 Europa EN 10088-2, EN 10088-3
JIS SUS434 Japón JIS G4304 / G4305
GOST 08Kh17M (08Х17М) Rusia / CEI GOST 5632
GB 1Cr17Mo China GB/T 20878
BS 434S17 Reino Unido BS 970 Part 1
KS STS434 Corea del Sur KS D 3706

Aplicaciones del acero inoxidable 434

Automoción

  • Molduras exteriores de carrocería
  • Marcos de ventanilla y techo solar
  • Colectores de escape
  • Tubos de escape intermedios
  • Deflectores y refuerzos de parachoques
Electrodomésticos

  • Paneles frontales de lavadoras
  • Puertas de lavavajillas
  • Cubiertas de cocinas y encimeras
  • Carcasas de microondas
  • Marcos de frigoríficos
Construcción y Arquitectura

  • Paneles de fachada ventilada
  • Revestimientos de columnas
  • Marcos de puertas y ventanas
  • Perfiles de remate y canalon
  • Barandillas en entornos costeros
Industria Alimentaria

  • Cintas transportadoras
  • Cubas y depósitos de lavado
  • Mesas y superficies de trabajo
  • Soportes y bastidores de horno
Equipos Industriales

  • Intercambiadores de calor de placas
  • Depósitos para ácidos débiles
  • Tuberías de proceso con cloruros
  • Válvulas de mariposa
  • Soportes y bridas de ventiladores
Industria Textil y Química

  • Rodillos guía de hilo
  • Toberas y boquillas de hilatura
  • Depósitos para tintes y ácidos orgánicos
  • Agitadores y mezcladores

Suministro 434 — Dimensiones y formas disponibles en SHUNFU METAL

Tabla 2 — Formas de suministro del acero inoxidable 434 / 1.4113
Forma Rango dimensional Condición Tolerancia habitual
Barra redonda laminada Ø 5 – 200 mm Recocida / Decapada h9 / h11 / EN 10278
Barra plana laminada 3 – 80 mm × 10 – 500 mm Recocida / Decapada EN 10278 / EN 10058
Barra redonda forjada Ø 80 – 700 mm Recocida + Desbastada o torneada +5 / –0 mm
Bloque plano forjado Espesor 50 – 500 mm, ancho hasta 1 500 mm Recocida + Desbastada EN 10243-1
Chapa / Bobina laminada en frío 0,3 – 6,0 mm × hasta 1 500 mm de ancho 2B / BA / 2D EN 10088-2
Tubo sin costura OD 10 – 325 mm, espesor 1,5 – 30 mm Recocida / Decapada ASTM A268 / EN 10216-5

Longitudes estándar: 3 000 – 6 000 mm; corte a medida disponible. Peso mínimo de pedido y condiciones según consulta.

Composición química del acero 434 / 1.4113 según normas

Tabla 3 — Composición química (% en masa) según ASTM A240, EN 10088-2 y JIS G4304
Elemento ASTM A240
(434 / S43400)		 EN 10088-2
(X6CrMo17-1 / 1.4113)		 JIS G4304
(SUS434)
C ≤ 0,12 ≤ 0,08 ≤ 0,12
Si ≤ 1,00 ≤ 1,00 ≤ 0,75
Mn ≤ 1,00 ≤ 1,00 ≤ 1,00
P ≤ 0,040 ≤ 0,040 ≤ 0,040
S ≤ 0,030 ≤ 0,015 ≤ 0,030
Cr 16,0 – 18,0 16,0 – 18,0 16,0 – 18,0
Mo 0,75 – 1,25 0,90 – 1,40 0,75 – 1,25
N — ≤ 0,030 —
Ni ≤ 0,50 — ≤ 0,60

Propiedades mecánicas del acero 434 en estado recocido

Tabla 4 — Propiedades mecánicas en condición recocida según ASTM A240 y EN 10088-2
Propiedad ASTM A240
(434 / S43400)		 EN 10088-2
(1.4113)		 JIS G4304
(SUS434)
Resistencia a la tracción Rm ≥ 450 MPa 430 – 630 MPa ≥ 450 MPa
Límite elástico Rp0,2 ≥ 240 MPa ≥ 260 MPa ≥ 245 MPa
Alargamiento A50 ≥ 22 % ≥ 20 % ≥ 22 %
Dureza HBW ≤ 183 ≤ 192 ≤ 183
Dureza HRB ≤ 89 ≤ 90 ≤ 89
Densidad 7,75 g/cm³
Módulo de elasticidad 220 GPa
Conductividad térmica 23 W/(m·K) a 20 °C
Resistencia a la oxidación Continuo hasta 870 °C; intermitente hasta 980 °C

Nota: Los valores corresponden a condición de suministro recocida (softening anneal). El 434 / 1.4113 no es endurecible por tratamiento térmico al ser un acero ferrítico.

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