The 11th wedding anniversary is a steel wedding, where steel is a hard and rust resistant metal. Using steel as a metaphor for an 11 year marriage expresses that after 11 years of testing, the marriage is now unbreakable and the relationship between husband and wife is becoming increasingly close.
The names of marriages at different stages
1 year: Paper marriage; 2 years: Cotton wedding; 3 years: skin marriage; 4 years: Flower and fruit marriage; 5 years: Wooden marriage;
6 years: sugar wedding; 7 years: Hand marriage; 8 years: Bronze wedding; 9 years: pottery wedding; 10 years: Tin marriage;
11 years: Coral marriage; 15 years: Crystal Marriage; 20 years: porcelain wedding; 25 years: Silver marriage; 30 years: Pearl marriage;
35 years: Coral marriage; 40 years: Ruby marriage; 45 years: Sapphire marriage; 50 years: Golden Marriage; 55 years: Emerald Wedding;
60 years: Diamond wedding; 70 years: White Gold Marriage; 80 years: Diamond wedding.